Document:

EXHIBIT K

                                LOCK-UP AGREEMENT

                                                                 August 20, 2004

Sunrise Securities Corporation,
         as Placement Agent

The Buyers as set forth in
Schedule A hereto

Re:      Dendo Global Corp.

Ladies and Gentlemen:

      The undersigned  understands that certain Buyers (as therein defined) have
entered into a Securities Purchase Agreement (the "PURCHASE  AGREEMENT"),  dated
as of August __, 2004,  with Dendo Global  Corp.,  a Nevada  corporation  (to be
renamed  TechAlt,  Inc.) (the "COMPANY")  providing for the sale (the "SALE") by
the Company of certain  Preferred  Shares,  Warrants and  Additional  Investment
Rights (as such terms are defined in the  Purchase  Agreement)  of the  Company.
Capitalized  terms used herein and not otherwise defined shall have the meanings
set forth in the Purchase Agreement.

      In  consideration  of the  Buyers'  agreement  to purchase  the  Preferred
Shares,  Warrants  and  Additional  Investment  Rights,  and for other  good and
valuable consideration receipt of which is hereby acknowledged,  the undersigned
hereby agrees that, without the prior written consent of Buyers  representing at
least a majority in interest of all Buyers, the undersigned will not, during the
period from the date of this  Agreement  through  (and  including)  the later to
occur  of (a) the date  that is 180  days  after  the  Closing  Date and (b) the
Effective Date (as defined in the  Registration  Rights  Agreement,  dated as of
August __,  2004,  among the Company and the Buyers (as therein  defined))  (the
"LOCK-UP TERMINATION DATE"), (1) offer, pledge, sell, contract to sell, sell any
option or contract to purchase,  purchase any option or contract to sell,  grant
any option,  right or warrant to purchase,  or otherwise transfer or dispose of,
directly  or  indirectly,   any  shares  of  Common  Stock,  or  any  securities
convertible  into or exercisable or  exchangeable  for Common Stock or (2) enter
into any swap or other agreement that transfers, in whole or in part, any of the
economic  consequences  of  ownership  of the  Common  Stock,  whether  any such
transaction described in clause (1) or (2) above is to be settled by delivery of
Common Stock or such other securities,  in cash or otherwise.  In addition,  the
undersigned   agrees  that,   without  the  prior  written   consent  of  Buyers
representing at least a majority in interest of all Buyers,  it will not, during
the period from the date of this Agreement  through (and  including) the Lock-Up
Termination Date, make any demand for or exercise any right with respect to, the
registration of any shares of Common Stock or any security  convertible  into or
exercisable or exchangeable for Common Stock.

<PAGE>

      In  furtherance  of the  foregoing,  the Company,  and any duly  appointed
transfer  agent for the  registration  or transfer of the  securities  described
herein,  are hereby  authorized to decline to make any transfer of securities if
such transfer would constitute a violation or breach of this Letter Agreement.

      The  undersigned  hereby  represents and warrants that the undersigned has
full power and  authority  to enter into this Letter  Agreement.  All  authority
herein  conferred  or  agreed  to  be  conferred  and  any  obligations  of  the
undersigned  shall be binding upon the  successors,  assigns,  heirs or personal
representatives of the undersigned.

      The undersigned understands that the Buyers are entering into the Purchase
Agreement in reliance upon this Letter Agreement.

      This lock-up  agreement  shall be governed by and  construed in accordance
with the laws of the State of New York,  without  regard to the conflict of laws
principles thereof.

                                      Very truly yours,

                                      James E. Solomon
                                      /s/
                                      ------------------------------------------

AGREED AND ACKNOWLEDGED:

DENDO GLOBAL CORP.

By: /s/
   -----------------------------------------
     Name:  David M. Otto
     Title: Secretary

<PAGE>

                                   SCHEDULE A

                                   THE BUYERS

Cherokee Holdings II, LLC

Caldwell, Derek
641 Lexington Ave.
25th Floor
New York, NY 10022

Cranshire Capital LP
666 Dundee Rd.
Suite 1901
Northbrook, IL 60062
Attention: Mitchell Kopin

Crestview Capital Funds
95 Revere
Suite A
Northbrook, IL 60062
Attention: Stewart Flink
           Adam Blonsky

DKR Oasis
1281 East Main St.
3rd Floor
Stamford, CT 06902-3565
Attention: Ethan Benovitz

Iroquois Capital
641 Lexington Ave.
26th Floor
New York, NY 10022
Attention: Michael Chill

Smithfield Fiduciary LLC
c/o Highbridge Capital Management, LLC
9 West 57th Street, 27th Floor
New York, New York 10019
Attention:  Ari J. Storch
            Adam J. ChillNEITHER THE ISSUANCE AND SALE OF THE SECURITIES  REPRESENTED BY THIS CERTIFICATE
NOR THE  SECURITIES  INTO  WHICH  THESE  SECURITIES  ARE  EXERCISABLE  HAVE BEEN
REGISTERED OR QUALIFIED  UNDER THE  SECURITIES  ACT OF 1933, AS AMENDED,  OR ANY
STATE SECURITIES LAWS. SUCH SECURITIES MAY NOT BE SOLD, TRANSFERRED OR OTHERWISE
DISPOSED  OF WITHOUT  EITHER (I) AN  EFFECTIVE  REGISTRATION  STATEMENT  FOR THE
SECURITIES  UNDER THE  SECURITIES  ACT OF 1933,  AS AMENDED,  (II) AN OPINION OF
COUNSEL, IN A FORM REASONABLY  ACCEPTABLE TO THE COMPANY, THAT SUCH TRANSFER MAY
BE MADE  WITHOUT  REGISTRATION  OR  QUALIFICATION  UNDER  SAID ACT OR (III) SUCH
TRANSFER  BEING MADE  PURSUANT TO RULE 144 UNDER SAID ACT.  NOTWITHSTANDING  THE
FOREGOING,  THE SECURITIES MAY BE PLEDGED IN CONNECTION  WITH A BONA FIDE MARGIN
ACCOUNT OR OTHER LOAN OR FINANCING ARRANGEMENT SECURED BY THE SECURITIES.

                               DENDO GLOBAL CORP.

                       FORM OF ADDITIONAL INVESTMENT RIGHT

Additional Investment Right No.: AIR _____

Number of Shares:
                 -------------------
Date of Issuance:  August __, 2004 ("ISSUANCE DATE")

Dendo Global Corp.,  a Nevada  corporation  (to be renamed  TechAlt,  Inc.) (the
"COMPANY"),   hereby  certifies  that,  for  value  received,  the  receipt  and
sufficiency of which are hereby  acknowledged,  [INSERT  BUYER],  the registered
holder hereof, or its permitted assigns (the "HOLDER"), is entitled,  subject to
the terms set forth below,  to purchase from the Company,  at the Exercise Price
(as  defined  below)  then in effect,  at any time or times on or after the date
hereof, but not after 11:59 p.m., New York City time, on the Expiration Date (as
defined  below),  ___________ ( )1 fully paid  nonassessable  shares of Series A
Convertible   Preferred  Stock  par  value  $.001  per  share  (the  "ADDITIONAL
INVESTMENT RIGHT SHARES"). Except as otherwise defined herein, capitalized terms
in this Additional Investment Right shall have the meanings set forth in Section
15. This Additional Investment Right (including all Additional Investment Rights
issued in exchange,  transfer or replacement hereof, the "ADDITIONAL  INVESTMENT
RIGHTS") is one of the Additional Investment Rights issued pursuant to Section 1
of that certain Securities Purchase Agreement,  dated as of August __, 2004 (the
"INITIAL   ISSUANCE   DATE"),   among  the  Company  and  the  purchasers   (the
"PURCHASERS") referred to therein (the "SECURITIES PURCHASE AGREEMENT").

-----------------
1     Insert  number set forth  opposite  such Buyer's name in column (5) of the
      Schedule of Buyers set forth in the Security Purchase Agreement.

<PAGE>

      1. EXERCISE OF ADDITIONAL INVESTMENT RIGHT.

            a. MECHANICS OF EXERCISE. Subject to the terms and conditions hereof
(including, without limitation, the limitations set forth in Section 1(f)), this
Additional  Investment Right may be exercised by the Holder on any day, in whole
or in part, by (i) delivery of a written notice,  in the form attached hereto as
EXHIBIT A (the  "EXERCISE  NOTICE"),  of the Holder's  election to exercise this
Additional  Investment  Right, (ii) payment to the Company of an amount equal to
the applicable Exercise Price multiplied by the number of Additional  Investment
Right Shares as to which this  Additional  Investment  Right is being  exercised
(the  "AGGREGATE  EXERCISE  PRICE")  in  cash or wire  transfer  of  immediately
available funds.  The date the Exercise Notice and the Aggregate  Exercise Price
are  delivered  to the  Company (as  determined  in  accordance  with the notice
provisions  hereof) is an  "EXERCISE  DATE." The Holder shall not be required to
deliver the original Additional  Investment Right in order to effect an exercise
hereunder.  Execution  and delivery of the Exercise  Notice with respect to less
than all of the Additional Investment Right Shares shall have the same effect as
cancellation of the original  Additional  Investment Right and issuance of a new
Additional  Investment  Right  evidencing  the right to purchase  the  remaining
number of Additional  Investment  Right Shares.  On or before the first Business
Day following  the Exercise  Date,  the Company  shall  transmit by facsimile an
acknowledgment  of  confirmation  of  receipt  of the  Exercise  Notice  and the
Aggregate  Exercise  Price to the Holder and the Company's  transfer  agent (the
"TRANSFER  AGENT").  On or before the third  Business Day following the Exercise
Date, the Company shall (X) issue and deliver to the address as specified in the
Exercise  Notice,  a  certificate,  registered  in the name of the Holder or its
designee,  for the number of  Additional  Investment  Right  Shares to which the
Holder is entitled pursuant to such exercise,  or (Y) provided that the Transfer
Agent is  participating  in The Depository  Trust Company ("DTC") Fast Automated
Securities  Transfer  Program,  upon the  request  of the  Holder,  credit  such
aggregate  number of Additional  Investment  Right Shares to which the Holder is
entitled  pursuant to such  exercise to the Holder's or its  designee's  balance
account with DTC through its Deposit  Withdrawal Agent Commission system. On the
Exercise  Date,  the Holder shall be deemed for all  corporate  purposes to have
become the  holder of record of the  Additional  Investment  Right  Shares  with
respect  to  which  this  Additional   Investment   Right  has  been  exercised,
irrespective  of the  date  of  delivery  of the  certificates  evidencing  such
Additional Investment Right Shares. Upon surrender of this Additional Investment
Right to the Company following one or more partial exercises,  the Company shall
as soon as practicable  and in no event later than three (3) Business Days after
receipt of the Additional  Investment Right and at its own expense,  issue a new
Additional  Investment Right (in accordance with Section 7(d))  representing the
right to purchase the number of Additional  Investment Right Shares  purchasable
immediately prior to such exercise under this Additional  Investment Right, less
the number of  Additional  Investment  Right  Shares with  respect to which this
Additional  Investment Right is exercised.  No fractional  Additional Investment
Right  Shares are to be issued upon the exercise of this  Additional  Investment
Right, but rather the number of Additional  Investment Right Shares to be issued
shall be rounded up to the nearest whole  number.  The Company shall pay any and
all taxes which may be payable  with  respect to the  issuance  and  delivery of
Additional  Investment Right Shares upon exercise of this Additional  Investment
Right.

            b. EXERCISE PRICE. For purposes of this Additional Investment Right,
"EXERCISE  PRICE" means $1.00 per Additional  Investment  Right Share underlying
this Additional Investment Right, subject to adjustment as provided herein.

<PAGE>

            c.  COMPANY'S  FAILURE TO TIMELY  DELIVER  SHARES Subject to Section
1(e),  if the Company shall fail for any reason or for no reason to issue to the
Holder within ten (10) Business Days of the Exercise Date, a certificate for the
number of shares of Series A Convertible  Preferred Stock to which the Holder is
entitled or to credit the Holder's  balance  account with DTC for such number of
Additional  Investment  Right  Shares to which the Holder is  entitled  upon the
Holder's exercise of this Additional  Investment Right, the Company shall pay as
additional  damages in cash to the Holder on each day after such third  Business
Day that the issuance of such Additional  Investment  Right Shares is not timely
effected an amount  equal to 1.0% of the product of (A) the sum of the number of
Additional  Investment  Right  Shares not issued to the Holder on a timely basis
and to which the Holder is entitled and (B) $1.00.

            d. ABSOLUTE AND UNCONDITIONAL OBLIGATION.  The Company's obligations
to issue and deliver  Additional  Investment Right Shares in accordance with the
terms  hereof are  absolute  and  unconditional,  irrespective  of any action or
inaction by the holder to enforce the same, the recovery of any judgment against
any Person or any  action to  enforce  the same,  or any  setoff,  counterclaim,
recoupment,  limitation or  termination,  or any breach or alleged breach by the
holder or any other Person of any  obligation to the Company or any violation or
alleged violation of law by the holder or any other Person. Nothing herein shall
limit the Holder's right to pursue any other remedies available to it hereunder,
at law or in  equity,  including,  without  limitation,  a  decree  of  specific
performance  and/or  injunctive  relief with respect to the Company's failure to
timely deliver certificates representing Additional Investment Right Shares upon
exercise of the Additional  Investment  Right as required  pursuant to the terms
hereof.

            e.  LIMITATIONS  ON  EXERCISES.  The  Company  shall not  effect the
exercise of this Additional  Investment  Right, and no Person (as defined below)
who is the Holder shall have the right to exercise  this  Additional  Investment
Right,  to the extent that after  giving  effect to such  exercise,  such Person
(together with such Person's  affiliates)  would  beneficially  own in excess of
9.99% of the shares of the Common  Stock  outstanding  immediately  after giving
effect to such exercise.  For purposes of the foregoing sentence,  the aggregate
number of  shares of Common  Stock  beneficially  owned by such  Person  and its
affiliates  shall  include the number of shares of Common  Stock  issuable  upon
conversion of the Additional  Investment  Right Shares issuable upon exercise of
this Additional Investment Right with respect to which the determination of such
sentence is being made,  but shall exclude shares of Common Stock which would be
issuable upon (i) conversion of Additional Investment Right Shares issuable upon
exercise of the remaining,  unexercised  portion of this  Additional  Investment
Right  beneficially owned by such Person and its affiliates and (ii) exercise or
conversion of the unexercised or unconverted  portion of any other securities of
the Company  beneficially  owned by such Person and its  affiliates  (including,
without  limitation,  any  convertible  notes or convertible  preferred stock or
warrants)  subject to a limitation on  conversion  or exercise  analogous to the
limitation contained herein. Except as set forth in the preceding sentence,  for
purposes  of  this  paragraph,  beneficial  ownership  shall  be  calculated  in
accordance  with  Section  13(d) of the  Securities  Exchange  Act of  1934,  as
amended.  For purposes of this Additional  Investment  Right, in determining the
number of outstanding  shares of Common Stock a holder may rely on the number of
outstanding shares of Common Stock as reflected in (1) the Company's most recent
Form 10-Q,  Form 10-K or other public  filing with the  Securities  and Exchange
Commission,  as the case may be, (2) a more recent  public  announcement  by the
Company or (3) any other  notice by the Company or its  Transfer  Agent  setting
forth the number of shares of Common  Stock  outstanding.  For any reason at any
time,  upon the written or oral request of the Holder,  the Company shall within
one  Business  Day  confirm  orally  and in  writing to the Holder the number of
shares of Common Stock then outstanding.  In any case, the number of outstanding
shares of Common Stock shall be determined after giving effect to the conversion
or  exercise  of  securities  of  the  Company,  including  the  SPA  Additional
Investment  Rights,  by the Holder and its affiliates since the date as of which
such number of outstanding shares of Common Stock was reported.

<PAGE>

      2. PURCHASE RIGHTS; FUNDAMENTAL TRANSACTION.

            a. If at any time the  Company  grants,  issues or sells any Options
(as defined in the  Certificate  of  Designations),  Convertible  Securities (as
defined  in the  Certificate  of  Designations)  or  rights to  purchase  stock,
warrants,  securities  or other  property pro rata to the record  holders of any
class  of  Common  Stock  (the  "PURCHASE  RIGHTS"),  then  the  Holder  of this
Additional  Investment  Right  will be  entitled  to  acquire,  upon  the  terms
applicable to such Purchase  Rights,  the aggregate  Purchase  Rights which such
Holder  could  have  acquired  if such  Holder  had held the number of shares of
Common Stock  acquirable  upon  conversion of all of the  Additional  Investment
Right Shares issuable upon complete exercise of this Additional Investment Right
(without regard to any limitations on the exercise of this Additional Investment
Right or the conversion of the Additional  Investment Right Shares)  immediately
before  the date on which a record is taken for the grant,  issuance  or sale of
such Purchase  Rights,  or, if no such record is taken, the date as of which the
record holders of Common Stock are to be determined for the grant, issue or sale
of such Purchase Rights.

            b. FUNDAMENTAL TRANSACTIONS.  The Company shall not enter into or be
party  to  a  Fundamental   Transaction   (as  defined  in  the  Certificate  of
Designations), unless (i) the Person formed by or surviving any such Fundamental
Transaction (if other than the Company) or the Person to which such  Fundamental
Transaction  shall have been made  assumes  all the  obligations  of the Company
under this Additional  Investment Right and the other Transaction  Documents (as
defined in the Securities  Purchase Agreement) pursuant to written agreements in
form and  substance  satisfactory  to the  Required  Holders and approved by the
Required Holders prior to such Fundamental Transaction, and including agreements
to deliver to each holder of Additional  Investment  Rights in exchange for such
Additional  Investment  Rights,  a security of the Person formed by or surviving
any such  Fundamental  Transaction  (if other than the Company) or the Person to
which such Fundamental  Transaction  shall have been made evidenced by a written
instrument  substantially  similar  in form  and  substance  to this  Additional
Investment  Right,  including,  without  limitation,  a right  to  exercise  for
Additional  Investment  Right Shares that have been adjusted and approved as set
forth in Sections 5 and 6 of the Additional  Investment  Right Shares as if such
Additional  Investment  Right  Shares  were  outstanding  at the  time  of  such
Fundamental  Transaction  and  (ii)  the  Company  or the  Person  formed  by or
surviving  any  such  Fundamental  Transaction  or  to  which  such  Fundamental
Transaction  shall have been made is a publicly traded entity whose common stock
or equivalent  equity security is quoted on or listed for trading on an Eligible
Market (as  defined in the  Articles  of  Incorporation).  Upon any  Fundamental
Transaction,  the successor entity to such Fundamental Transaction shall succeed
to, and be substituted for (so that from and after the date of such  Fundamental
Transaction,  the provisions of this  Additional  Investment  Right referring to
such "Company" shall refer instead to the successor  entity or, if so elected by
the Required Holders, by the entity that, directly or indirectly,  controls such
successor  entity),  and may  exercise  every right and power of the Company and
shall  assume  all of the  obligations  of the  Company  under  this  Additional
Investment Right with the same effect as if such successor Person had been named
as the Company herein; provided, however, that the predecessor Company shall not
be relieved from its obligations  under the Transaction  Documents except in the
case of a Fundamental  Transaction  that meets the requirements of this section.
The  provisions of this Section shall apply  similarly and equally to successive
Fundamental Transactions

<PAGE>

      3.  NONCIRCUMVENTION.  The Company  hereby  covenants  and agrees that the
Company will not, by amendment of its  Certificate of Designation or through any
Fundamental  Transaction,  issue or sale of securities,  or any other  voluntary
action, avoid or seek to avoid the observance or performance of any of the terms
of this Additional  Investment  Right, and will at all times in good faith carry
out all the provisions of this Additional  Investment  Right and take all action
as may be required to protect the rights of the  Holder.  Without  limiting  the
generality of the foregoing,  the Company (i) will not increase the par value of
any shares of Series A Convertible  Preferred Stock receivable upon the exercise
of this  Additional  Investment  Right above the Exercise  Price then in effect,
(ii) will take all such actions as may be necessary or appropriate in order that
the Company may validly and legally issue fully paid and nonassessable shares of
Series A  Convertible  Preferred  Stock  upon the  exercise  of this  Additional
Investment  Right,  and (iii) will, so long as any of the Additional  Investment
Rights are outstanding,  take all action necessary to reserve and keep available
out of its authorized and unissued Series A Convertible  Preferred Stock, solely
for the purpose of effecting the exercise of the Additional  Investment  Rights,
100% of the number of shares of Series A  Convertible  Preferred  Stock as shall
from  time to  time be  necessary  to  effect  the  exercise  of the  Additional
Investment  Rights  then  outstanding  (without  regard  to any  limitations  on
exercise).

      4. REISSUANCE OF ADDITIONAL INVESTMENT RIGHTS.

            a.  TRANSFER OF  ADDITIONAL  INVESTMENT  RIGHT.  If this  Additional
Investment  Right  is  to  be  transferred,  the  holder  shall  surrender  this
Additional Investment Right to the Company, whereupon the Company will forthwith
issue and deliver upon the order of the Holder a new Additional Investment Right
(in  accordance  with  Section  4(d)),  registered  as the Holder  may  request,
representing  the right to purchase the number of  Additional  Investment  Right
Shares  being  transferred  by the Holder and, if less then the total  number of
Additional  Investment  Right Shares then underlying this Additional  Investment
Right is being  transferred,  a new Additional  Investment  Right (in accordance
with Section 4(d)) to the Holder  representing  the right to purchase the number
of Additional Investment Right Shares not being transferred.

            b. LOST,  STOLEN OR  MUTILATED  ADDITIONAL  INVESTMENT  RIGHT.  Upon
receipt by the Company of evidence reasonably satisfactory to the Company of the
loss, theft, destruction or mutilation of this Additional Investment Right, and,
in the case of loss, theft or destruction, of any indemnification undertaking by
the Holder to the Company in customary form and, in the case of mutilation, upon
surrender and  cancellation of this  Additional  Investment  Right,  the Company
shall execute and deliver to the Holder a new  Additional  Investment  Right (in
accordance with Section 4(d))  representing the right to purchase the Additional
Investment Right Shares then underlying this Additional Investment Right.

<PAGE>

            c. ADDITIONAL  INVESTMENT RIGHT EXCHANGEABLE FOR MULTIPLE ADDITIONAL
INVESTMENT RIGHTS.  This Additional  Investment Right is exchangeable,  upon the
surrender hereof by the Holder at the principal office of the Company, for a new
Additional  Investment Right or Additional Investment Rights (in accordance with
Section 4(d))  representing in the aggregate the right to purchase the number of
Additional  Investment  Right Shares then underlying this Additional  Investment
Right, and each such new Additional Investment Right will represent the right to
purchase  such  portion  of  such  Additional  Investment  Right  Shares  as  is
designated by the Holder at the time of such surrender;  provided, however, that
no Additional  Investment  Rights for fractional  shares of Series A Convertible
Preferred Stock shall be given.

            d.  ISSUANCE  OF NEW  ADDITIONAL  INVESTMENT  RIGHTS.  Whenever  the
Company is required to issue a new Additional  Investment  Right pursuant to the
terms of this Additional  Investment Right, such new Additional Investment Right
(i) shall be of like tenor with this  Additional  Investment  Right,  (ii) shall
represent, as indicated on the face of such new Additional Investment Right, the
right to purchase the Additional  Investment  Right Shares then  underlying this
Additional Investment Right (or in the case of a new Additional Investment Right
being issued pursuant to Section 4(a) or Section 4(c), the Additional Investment
Right Shares  designated by the Holder which, when added to the number of shares
of Series A Convertible  Preferred  Stock  underlying  the other new  Additional
Investment  Rights issued in connection with such issuance,  does not exceed the
number of Additional  Investment  Right Shares then  underlying  this Additional
Investment  Right),  (iii) shall have an issuance date, as indicated on the face
of such new Additional  Investment Right which is the same as the Issuance Date,
and (iv) shall have the same rights and conditions as this Additional Investment
Right.

      5. HOLDER NOT DEEMED A STOCKHOLDER.  Nothing  contained in this Additional
Investment Right shall be construed as imposing any liabilities on the Holder to
purchase any securities  (upon exercise of this Additional  Investment  Right or
otherwise)  or as a stockholder  of the Company,  whether such  liabilities  are
asserted by the Company or by  creditors of the  Company.  Notwithstanding  this
Section 5, the Company  will  provide the Holder with copies of the same notices
and  other  information  given to the  stockholders  of the  Company  generally,
contemporaneously with the giving thereof to the stockholders.

      6. COVENANTS.  DISCLOSURE OF TRANSACTIONS AND OTHER MATERIAL  INFORMATION.
On or before 8:30 a.m.,  New York Time, on the first Business Day following each
Exercise  Date,  the Company shall file a Current  Report on Form 8-K describing
the terms of the  transactions  contemplated  by the exercise of this Additional
Investment Right in the form required by the 1934 Act. On the Exercise Date, the
Company shall confirm that the representations and warranties of the Company set
forth in the  Securities  Purchase  Agreement  are true and  correct  as of such
Exercise  Date as  though  made at that time  (except  for  representations  and
warranties  that speak as of a specific  date) and that the  Company  shall have
performed, satisfied and complied in all respects with the covenants, agreements
and conditions required by the Transaction Documents to be performed,  satisfied
or complied with by the Company at or prior to such Exercise Date.

<PAGE>

      7. NOTICES.  Whenever notice is required to be given under this Additional
Investment Right,  unless otherwise provided herein,  such notice shall be given
in  accordance  with  Section 9(f) of the  Securities  Purchase  Agreement.  The
Company shall provide the Holder with prompt written notice of all actions taken
pursuant to this Additional  Investment Right,  including in reasonable detail a
description  of such  action  and the reason  therefore.  Without  limiting  the
generality of the foregoing,  the Company will give written notice to the Holder
(i)  immediately  upon any  adjustment of the Exercise  Price,  setting forth in
reasonable detail,  and certifying,  the calculation of such adjustment and (ii)
at least fifteen days prior to the date on which the Company closes its books or
takes a record (A) with respect to any dividend or distribution  upon the Series
A Convertible  Preferred Stock, (B) with respect to any grants,  issues or sales
of any Options,  Convertible  Securities or rights to purchase stock,  warrants,
securities or other property to holders of Series A Convertible  Preferred Stock
or (C) for  determining  rights  to vote with  respect  to any  Organic  Change,
dissolution or liquidation, provided in each case that such information shall be
made known to the  public  prior to or in  conjunction  with such  notice  being
provided to the Holder.

      8.  AMENDMENT  AND  WAIVER.  Except  as  otherwise  provided  herein,  the
provisions of this  Additional  Investment  Right may be amended and the Company
may take  any  action  herein  prohibited,  or omit to  perform  any act  herein
required to be  performed  by it, only if the Company has  obtained  the written
consent of the Required  Holders;  provided that no such action may increase the
exercise  price of any  Additional  Investment  Right or decrease  the number of
shares or class of stock  obtainable upon exercise of any Additional  Investment
Right without the written  consent of the holder of this  Additional  Investment
Right.  No such  amendment  shall be  effective to the extent that it applies to
less  than  all  of  the  holders  of  the  Additional  Investment  Rights  then
outstanding.

      9. GOVERNING LAW. This Additional  Investment Right shall be construed and
enforced in accordance  with,  and all questions  concerning  the  construction,
validity,  interpretation  and performance of this Additional  Investment  Right
shall be governed by, the internal laws of the State of New York, without giving
effect to any choice of law or conflict of law provision or rule (whether of the
State of New York or any other  jurisdictions)  that would cause the application
of the laws of any jurisdictions other than the State of New York.

      10.  CONSTRUCTION;  HEADINGS.  This Additional  Investment  Right shall be
deemed to be jointly drafted by the Company and all the Purchasers and shall not
be  construed  against any person as the drafter  hereof.  The  headings of this
Additional  Investment Right are for convenience of reference and shall not form
part of, or affect the interpretation of, this Additional Investment Right.

      11.  REMEDIES,  OTHER  OBLIGATIONS,  BREACHES AND INJUNCTIVE  RELIEF.  The
remedies provided in this Additional Investment Right shall be cumulative and in
addition to all other remedies available under this Additional Investment Right,
the Securities Purchase Agreement and the other Transaction Documents, at law or
in equity  (including a decree of specific  performance  and/or other injunctive
relief), and nothing herein shall limit the right of the Holder to pursue actual
damages  for any  failure  by the  Company  to  comply  with  the  terms of this
Additional Investment Right. The Company acknowledges that a breach by it of its
obligations  hereunder  will cause  irreparable  harm to the Holder and that the
remedy at law for any such  breach  may be  inadequate.  The  Company  therefore
agrees that,  in the event of any such breach or threatened  breach,  the Holder
shall be entitled, in addition to all other available remedies, to an injunction
restraining  any breach,  without the  necessity  of showing  economic  loss and
without any bond or other security being required.

<PAGE>

      12.  TRANSFER.  This Additional  Investment Right may be offered for sale,
sold, transferred or assigned without the consent of the Company.

      13. CERTAIN DEFINITIONS. For purposes of this Additional Investment Right,
the following terms shall have the following meanings:

            a. "BLOOMBERG" means Bloomberg Financial Markets.

            b. "BUSINESS DAY" means any day other than Saturday, Sunday or other
day on which commercial banks in The City of New York are authorized or required
by law to remain closed.

            c.  "CLOSING  BID PRICE" and  "CLOSING  SALE PRICE"  means,  for any
security  as of any date,  the last  closing  bid price and last  closing  trade
price,  respectively,  for such security on the Principal Market, as reported by
Bloomberg,  or, if the Principal  Market begins to operate on an extended  hours
basis and does not  designate  the closing bid price or the closing trade price,
as the case may be, then the last bid price or last trade  price,  respectively,
of such security prior to 4:00:00 p.m., New York Time, as reported by Bloomberg,
or, if the Principal Market is not the principal  securities exchange or trading
market  for such  security,  the last  closing  bid price or last  trade  price,
respectively,  of such security on the principal  securities exchange or trading
market where such security is listed or traded as reported by  Bloomberg,  or if
the  foregoing  do not apply,  the last  closing bid price or last trade  price,
respectively,  of such security in the over-the-counter market on the electronic
bulletin board for such security as reported by Bloomberg, or, if no closing bid
price or last trade  price,  respectively,  is  reported  for such  security  by
Bloomberg,  the average of the bid prices, or the ask prices,  respectively,  of
any market  makers for such  security as  reported in the "pink  sheets" by Pink
Sheets LLC (formerly the National  Quotation  Bureau,  Inc.). If the Closing Bid
Price or the  Closing  Sale  Price  cannot be  calculated  for a  security  on a
particular  date on any of the  foregoing  bases,  the  Closing Bid Price or the
Closing Sale Price,  as the case may be, of such  security on such date shall be
the fair market value as mutually  determined by the Company and the Holder.  If
the  Company  and the Holder are unable to agree upon the fair  market  value of
such security,  then such dispute shall be resolved  pursuant to Section 12. All
such determinations to be appropriately  adjusted for any stock dividend,  stock
split,  stock  combination  or other similar  transaction  during the applicable
calculation period.

            d. "COMMON  STOCK" means (i) the Company's  common stock,  $.001 par
value and (ii) any capital  stock into which such  Common  Stock shall have been
changed or any capital stock  resulting from a  reclassification  of such Common
Stock.

            e.  "CONVERTIBLE  SECURITIES"  means any stock or securities  (other
than  Options)  directly  or  indirectly  convertible  into  or  exercisable  or
exchangeable for Common Stock.

<PAGE>

            f. "EXPIRATION DATE" means the date that is ninety (90) Trading Days
following, but not including, the Issuance Date.

            g. "OPTIONS" means any rights,  warrants or options to subscribe for
or purchase Series A Convertible Preferred Stock or Convertible Securities.

            h. "PERSON"  means an individual,  a limited  liability  company,  a
partnership,  a  joint  venture,  a  corporation,  a  trust,  an  unincorporated
organization,  any other entity and a  government  or any  department  or agency
thereof.

            i. "PRINCIPAL MARKET" means the Nasdaq National Market.

            j. "REGISTRATION  RIGHTS AGREEMENT" means that certain  registration
rights  agreement  dated the Initial  Issuance Date by and among the Company and
the Purchasers.

            k. "REQUIRED HOLDERS" means holders of Additional  Investment Rights
representing  the  right  to  acquire  at  least a  majority  of the  number  of
Additional  Investment Right Shares underlying the Additional  Investment Rights
then outstanding.

            l.  "TRADING  DAY" means any day on which the Common Stock is traded
on the  Principal  Market,  or, if the  Principal  Market  is not the  principal
trading market for the Common Stock, then on the principal  securities  exchange
or  securities  market on which the Common Stock is then traded;  provided  that
"Trading  Day" shall not include any day on which the Common  Stock is scheduled
to trade on such  exchange or market for less than 4.5 hours or any day that the
Common Stock is suspended  from trading during the final hour of trading on such
exchange or market (or if such  exchange or market does not designate in advance
the closing  time of trading on such  exchange  or market,  then during the hour
ending at 4:00 p.m., New York City Time).

                            [SIGNATURE PAGE FOLLOWS]

<PAGE>

      IN WITNESS  WHEREOF,  the Company has caused  this  Additional  Investment
Right to be duly executed as of the Issuance Date set out above.

                                      DENDO GLOBAL CORP.

                                      By:
                                          --------------------------------------
                                          Name:  James E. Solomon
                                          Title: President and CEO

<PAGE>

                                                                       EXHIBIT A

                                 EXERCISE NOTICE
            TO BE EXECUTED BY THE REGISTERED HOLDER TO EXERCISE THIS
                           ADDITIONAL INVESTMENT RIGHT

                               DENDO GLOBAL CORP.

To:   Dendo Global Corp..

      The  undersigned  is the holder of Additional  Investment  Right No. _____
(the  "ADDITIONAL  INVESTMENT  Right") issued by Dendo Global  Corp..,  a Nevada
corporation (to be renamed TechAlt, Inc. (the "COMPANY"). Capitalized terms used
herein and not otherwise defined shall have the respective meanings set forth in
the Additional Investment Right.

            1. The  Additional  Investment  Right is  currently  exercisable  to
purchase a total of ____________ Additional Investment Right Shares.

            2. The  undersigned  holder  hereby  exercises its right to purchase
______________  Additional  Investment  Right Shares  pursuant to the Additional
Investment Right.

            3.  The  holder  shall  pay the sum of  $___________________  to the
Company in accordance with the terms of the Additional Investment Right.

            4.  Pursuant  to this  exercise,  the Company  shall  deliver to the
holder  __________  Additional  Investment  Right Shares in accordance  with the
terms of the Additional Investment Right.

            5. Following this exercise, the Additional Investment Right shall be
exercisable to purchase a total of ________________  Additional Investment Right
Shares.

      Please issue the Additional  Investment Right Shares in the following name
and to the following address:

Issue to:
         -----------------------------------------------------------------------

Account Number:
               -----------------------------------------------------------------
                       (if electronic book entry transfer)

DTC Participant Number:
                       ---------------------------------------------------------
                       (if electronic book entry transfer)

Date: _______________ __, ______

Name of Registered Holder

By:
   -----------------------------------------
     Name:
     Title:

<PAGE>

                                 ACKNOWLEDGMENT

      The Company hereby  acknowledges  this Exercise  Notice and hereby directs
OTC Stock Transfer Inc. to issue the above indicated  number of shares of Series
A Convertible Preferred Stock in accordance with the Transfer Agent Instructions
dated  August __, 2004 from the Company  and  acknowledged  and agreed to by OTC
Stock Transfer Inc.

                                      DENDO GLOBAL CORP.

                                      By:
                                          --------------------------------------
                                          Name:  James E. Solomon
                                          Title: President and CEO

<PAGE>

                               FORM OF ASSIGNMENT

 [To be completed and signed only upon transfer of Additional Investment Right]

      FOR VALUE RECEIVED,  the undersigned  hereby sells,  assigns and transfers
unto  ________________________________  the  right  represented  by  the  within
Additional  Investment  Right  to  purchase  ____________  shares  of  Series  A
Convertible  Preferred  Stock  of  Dendo  Global  Corp.,  to  which  the  within
Additional  Investment Right relates and appoints  ________________  attorney to
transfer  said  right on the books of Dendo  Global  Corp.,  with full  power of
substitution in the premises.

Dated:                      ,
       ---------------------

          (Signature must conform in all respects to name of holder as
            specified on the face of the Additional Investment Right)

                                      ------------------------------------------
                                      Address of Transferee

                                      ------------------------------------------

                                      ------------------------------------------

In the presence of:

--------------------------------------

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