Document:

<PAGE>

                                                                   Exhibit 4.12

                           CERTIFICATE OF DESIGNATION
                                       OF
                            SERIES II PREFERRED STOCK
                            PAR VALUE $.01 PER SHARE
                                       OF
                              CROWN NORTHCORP, INC.

         A. DESIGNATION. There shall be a series of Preferred Stock to be known
as Series II Non-Voting, Convertible Preferred Stock, par value $0.01 per share
(hereinafter referred to as "Series II Convertible Preferred Stock") consisting
of twelve (12) authorized shares. After the issuance of the Series II
Convertible Preferred Stock and until the redemption of the outstanding shares
thereof, the Corporation shall not authorize or issue any shares of common or
preferred stock having rights or preferences with respect to payment of
dividends, liquidation or redemption that are senior to the rights and
preferences of the Series II Convertible Preferred Stock with respect to such
matters without having obtained the prior written consent of two-thirds of the
holders.

         B. LIQUIDATION IN GENERAL. In the event of a Liquidation (defined
below), the holders of record of Series II Convertible Preferred Stock (to the
extent that such stock has not been redeemed or converted) shall be entitled to
be paid in full the sum of $10,000 per share, plus an interest amount, expressed
in dollars, equal to a six percent (6%) cumulative dividend on the sum of
$10,000 from the date that the Series II Preferred Stock is issued until the
date on which the Liquidation occurs (the "Liquidation Preference") before
assets of the Corporation shall be distributed among or paid over to the holders
of Common Stock or other shares ranking junior to Series II Convertible
Preferred Stock (the "Junior Securities") in the distribution of assets or upon
the Liquidation of the Corporation. Written notice of a Liquidation, stating a
payment date and the place where such payments shall be made, shall be given to
the holders of record of Series II Convertible Preferred Stock, such notice to
be addressed to each such holder at such holder's address as shown on the
records of the Corporation. The liquidation, dissolution or winding up of the
Corporation, whether voluntary or involuntary, the Corporation's consolidation
or merger with any other entity or group of entities, in which the stockholders
of the Corporation prior to such transaction do not own at least a majority of
the voting capital stock of the surviving entity after the merger or
consolidation, or the Corporation's sale or transfer of all or substantially all
of the Corporation's assets, shall be deemed a "Liquidation" within the meaning
of the provisions of this Section B.

         The Series II Convertible Preferred Stock shall rank in respect of the
distribution of assets or upon the Liquidation of the Corporation, subject to
the last sentence of this paragraph, on a parity with any other Senior
Securities (as defined below). If upon any Liquidation, the net assets available
for distribution to the holders of shares of the Series II Convertible Preferred
Stock and subsequent series of Preferred Stock issued with rights

                                       1
<PAGE>
equivalent to the Series II Convertible Preferred Stock (collectively referred
to herein as the "Senior Securities") shall be insufficient to pay the holders
of all of the outstanding shares of the Senior Securities the full amounts to
which they respectively shall be entitled, the holders of such shares, without
regard to classes or series, shall share in any distribution of assets in
proportion to the amounts respectively due to them on payment in full. In the
event of a Liquidation resulting from the Corporation's consolidation or merger
with any other entity or group of entities in which the stockholders of the
Corporation prior to such transaction do not own at least a majority of the
voting capital stock of the surviving entity after the merger or consolidation
or the sale or transfer of all or substantially all of the Corporation's assets,
the Series II Convertible Preferred Stock shall rank in respect of the
distribution of assets prior to any other Senior Securities whose terms do not
specifically include within the definition of "Liquidation" such consolidations,
mergers or asset transfers.

         C. CUMULATIVE DIVIDENDS. The holders of record of Series II Convertible
Preferred Stock shall be entitled to quarterly cash dividends at the annual rate
of six percent (6%) per share of Series II Convertible Preferred Stock on the
Liquidation Preference (the "Dividend Rate"). The dividends provided for in this
Section C shall begin to accrue and be cumulative on outstanding shares of
Series II Convertible Preferred Stock from the date of original issuance of the
shares of Series II Convertible Preferred Stock by the Corporation. Such
dividends shall accrue from day to day, whether or not earned or declared. Such
dividends shall be paid solely and only to the extent that corporate funds are
legally available for the payment thereof and only to the extent that such
dividends are declared payable by the Corporation's Board of Directors, which
declarations the Corporation shall not be obligated to make.

         In the event of a Liquidation, the holders of record of Series II
Convertible Preferred Stock shall be entitled to be paid in full all dividends
declared payable by the Corporation's Board of Directors before assets of the
Corporation shall be distributed among or paid over to the holders of Junior
Securities. Before the Liquidation, the full amount of all unpaid dividends
declared payable by the Corporation's Board of Directors on Series II
Convertible Preferred Stock shall be paid before the declaration or setting
apart for payment of any dividend or other distribution on Junior Securities. No
dividend shall be paid, declared or set apart for payment on any Junior
Securities unless the Corporation has paid all dividends on or in respect of all
outstanding shares of Series II Convertible Preferred Stock which have been
declared and are unpaid.

         With respect to the payment of dividends, the Series II Convertible
Preferred Stock shall rank on parity with other Senior Securities (to the extent
that dividends are due on such other Senior Securities), and senior in priority
to all shares of Junior Securities.

         D. CONVERSION RIGHTS.

                  (i) VOLUNTARY CONVERSION. Each share of the Series II
Preferred Stock will be convertible at the option of the holders of record
thereof at any time on or before December 31, 2007 into 333,333

                                       2
<PAGE>

shares of fully paid and nonassessable shares of Common Stock, reflecting a
conversion ration of one share of the Services II Preferred Stock for 333,333
shares of the Common Stock (the "Conversion Ratio"). Upon the conversion of
Series II Convertible Preferred Stock, dividends relating to the shares of
Series II Convertible Preferred Stock converted shall cease to cumulate and all
preferences upon Liquidation shall cease.

                  (ii) METHOD OF CONVERSION. To exercise the voluntary
conversion privilege provided in paragraph (i) above, each holder of Series II
Convertible Preferred Stock, on or before December 31, 2007, shall surrender
such holder's certificates representing Series II Convertible Preferred Stock at
the Corporation's office or at such other place as shall be designated by the
Corporation, duly endorsed to the Corporation. Upon the Corporation's receipt of
such certificates, the Corporation shall issue certificates representing the
appropriate number of shares of Common Stock in the respective names of the
holders of Series II Convertible Preferred Stock or in the names of the holders'
designees.

                  (iii) ADJUSTMENT OF NUMBER OF SHARES OF COMMON STOCK.

                           (a) STOCK DIVIDENDS; STOCK SPLITS. If the number of
                  shares of Common Stock outstanding at any time after the date
                  of issuance of the shares of Series II Convertible Preferred
                  Stock is increased by a stock dividend payable in shares of
                  Common Stock or by a subdivision or split-up of shares of
                  Common Stock, then immediately after the record date fixed for
                  the determination of holders of shares of Common Stock
                  entitled to receive such stock dividend or the effective date
                  of such subdivision or split-up, as the case may be, the
                  Conversion Ratio shall be appropriately reduced so that the
                  holder of any shares of Series II Convertible Preferred Stock
                  thereafter converted shall be entitled to receive the number
                  of shares of Common Stock of the Corporation which such holder
                  would have owned immediately following such action had such
                  shares of Series II Convertible Preferred Stock been converted
                  immediately prior thereto.

                           (b) COMBINATION OF SHARES. If the number of shares of
                  Common Stock outstanding at any time after the date of
                  issuance of the shares of Series II Convertible Preferred
                  Stock is decreased by a combination of the outstanding shares
                  of Common Stock, then immediately after the effective date of
                  such combination, the Conversion Ratio shall be appropriately
                  increased so that the holder of any shares of Series II
                  Convertible Preferred Stock thereafter converted shall be
                  entitled to receive the number of shares of Common Stock of
                  the Corporation which such holder would have owned immediately
                  following such action had such shares of Series II Convertible
                  Preferred Stock been converted immediately prior thereto.

                  (iv) CANCELLATION. All shares of Series II Convertible
Preferred Stock which shall have been surrendered for conversion as herein
provided in this Section D - Conversion Rights shall no longer be deemed to be
outstanding and all rights with respect to such shares of Series II Convertible
Preferred Stock, shall forthwith cease and terminate, except only the rights of
the holders thereof to receive shares of Common Stock or other assets or
property in exchange therefor and to receive the payment of accrued unpaid
dividends thereon from the Corporation as funds become legally available for the
payment thereof.

                                       3
<PAGE>

                  (v) RESERVATION OF SHARES. The Corporation shall at all times
reserve and keep available, free from preemptive rights, out of its treasury
shares or its authorized but unissued shares of Common Stock, for the purpose of
effecting the conversion of the shares of Series II Convertible Preferred Stock,
the full number of shares of Common Stock then deliverable upon the conversion
of all shares of Series II Convertible Preferred Stock then outstanding.

         E. REDEMPTION RIGHTS. The Corporation will have the right, but not the
obligation, to redeem the Series II Convertible Preferred Stock, in compliance
with applicable law and all agreements and instruments by which it is bound, at
any time upon 30 days' (such 30 days being referred to herein as the "Redemption
Period") prior written notice to the holders of record of the Series II
Convertible Preferred Stock (the date for which such redemption is so noticed
being referred to herein as the "Redemption Date") at their address on the
records of the Corporation, for a redemption price equal to the sum of (a)
$10,000, plus (b) an amount, expressed in dollars, equal to a six percent (6%)
cumulative dividend on the sum of $10,000 from the date a particular share of
the Series II Convertible Preferred Stock is issued until the day that it is so
redeemed (the "Redemption Price"). Such holders will have the right, but not the
obligation, to convert all, but not less than all, of the Series II Convertible
Preferred Stock during the Redemption Period pursuant to Section D above. On the
applicable redemption date, the holders of the Series II Convertible Preferred
Stock will deliver certificates representing the shares of Series II Convertible
Preferred Stock to be redeemed to the Corporation, duly endorsed for transfer in
blank, along with such other documents and instruments as the Corporation may
reasonably request, and the Corporation will pay to such holders the Redemption
Price. In the event that any Redemption Date is not a business day, then the
related redemption shall occur on the next following business day. The
Redemption Price shall be payable in cash, by certified check or by wire
transfer of immediately available funds to an account designated in writing by
the holders. No shares of Series II Convertible Preferred Stock which have been
so redeemed after the original issuance thereof shall be outstanding or shall
ever again be reissued, sold or transferred.

         E. VOTING RIGHTS.

         Prior to conversion of the shares of Series II Convertible Preferred
Stock to shares of Common Stock, the shares of the Series II Convertible
Preferred Stock shall have no voting rights with respect to directors of the
Corporation or any other matter requiring stockholder approval except with
respect to those matters requiring separate class votes as mandated by the laws
of the State of Delaware.

         F. ISSUE TAX. The issuance of certificates representing shares of
Common Stock upon the conversion of Series II Convertible Preferred Stock shall
be made without charge to the holders thereof for any issuance, stock transfer
or documentary stamp tax in respect thereof, PROVIDED that the Corporation shall
not be required to pay any tax that may be payable in respect of any transfer
involved in the issuance and delivery of any certificate in the name other than
that of the record holder of the Series II Convertible Preferred Stock that is
being converted.

                                       4
<PAGE>

         G. PREEMPTIVE RIGHTS. The holders of the shares of Series II
Convertible Preferred Stock shall have no preemptive rights.

         IN WITNESS WHEREOF, this Certificate of Designation has been executed
as of March 27, 2002.

                                             --------------------------------
                                             Rick Lewis, Vice President

---------------------------------
Stephen W. Brown, Secretary

                                       5<PAGE>

                                                                   Exhibit 10.91

                          STOCK SUBSCRIPTION AGREEMENT

         THIS STOCK SUBSCRIPTION AGREEMENT (this "Agreement") dated as of March
26, 2002 (the "Effective Date") is by and between RONALD E. ROARK, 380 Tucker
Drive, Worthington, Ohio 43085 ("Roark") and CROWN NORTHCORP, INC., a Delaware
corporation with offices at 1251 Dublin Road, Columbus, Ohio 43215 ("Crown").

                             BACKGROUND INFORMATION

         A. From time to time from the date hereof through December 31, 2002,
Crown anticipates needing to receive up to $120,000 in cash to sustain business
operations (the "Liquidity Needs") as is further detailed on the pro forma
financial statements attached hereto and made a part hereof as Exhibit A.

         B. Roark wants to commit to meet the Liquidity Needs by means of the
stock subscription set forth in this Agreement.

         NOW THEREFORE, for good and valuable consideration, the adequacy,
sufficiency and receipt of which are hereby acknowledged, Roark hereby agrees as
follows:

                             STATEMENT OF AGREEMENT

         1. SUBSCRIPTION; DESIGNEES. Roark hereby subscribes for up to twelve
(12) shares of Crown's Series II Convertible Preferred Stock, par value $.01 per
share (the "Series HH Preferred"). Attached hereto and made a part hereof as
Exhibit A is the Certificate of Designation for the Series II Preferred (the
"COD"). Roark agrees to pay for the Series II Preferred the sum of $10,000 per
share in the manner specified in Section 2 below. Roark, at his discretion, may
direct that particular shares of the Series HH Preferred so purchased be issued
either to him or one of his affiliates.

         2. CFO CERTIFICATION; PAYMENT OF SUBSCRIPTION; STOCK PURCHASE
AGREEMENT. Roark will pay for the shares of Series II Preferred as follows:

         (a) CFO CERTIFICATION. From time to time from the Effective Date
through December 31, 2002, Crown may determine that it has Liquidity Needs. At
such times, the Chief Financial Officer ("CFO") of Crown will deliver to Roark a
certification substantially in the form appearing on Exhibit B attached hereto
and made a part hereof (the "CFO Certification") describing the Liquidity Needs
in reasonable detail and

<PAGE>

requesting cash from Roark to meet those Liquidity Needs, which request will be
rounded upward to the nearest multiple of $10,000.

         (b) PAYMENT. Within ten (10) days of receipt of a CFO Certification,
Roark will pay or cause to be paid to Crown the amount set forth in the CFO
Certification.

         (c) STOCK PURCHASE AGREEMENT. Concurrently with each payment pursuant
to Section 2(b) above, Crown and Roark (or his designee) will execute and
deliver to each other a stock purchase agreement in the form appearing on
Exhibit C attached hereto and made a part hereof. If, for example, a particular
CFO Certification calls for a funding by Roark of $20,000, then the
corresponding stock purchase agreement will provide for the issuance of two
shares of Series II Preferred in exchange for that amount of cash.

         3. FILING OF COD. Crown will file the COD with the State of Delaware
concurrently with the first issuance of Series II Preferred pursuant to Section
2 hereof.

         4. AMENDMENT; CANCELLATION. This Agreement, and the subscription and
COD evidenced hereby, may not be cancelled or amended in any way without the
express written consent of both Crown and Roark.

         IN WITNESS WHEREOF, the undersigned has duly executed this Agreement as
of the date first written above.

                                           ------------------------------------
                                           RONALD E. ROARK

         The above subscription has been acknowledged and accepted and is
received and ordered filed as part of the records of Crown this 26th day of
March, 2002.

                                           CROWN NORTHCORP, INC.

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

                                       2

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00043-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00043-of-00352.parquet"}]]