Exhibit 10.10**FOURTH AMENDMENT TO CREDIT AGREEMENT**     THIS FOURTH AMENDMENT (this “Amendment”), dated as of November 20, 2007, to thatcertain Credit Agreement dated as of May 11, 2005 (as heretofore amended, supplemented or otherwisemodified, the “Credit Agreement”), among BOIS D’ARC ENERGY, INC., a Nevada corporation(“Borrower”), the banks and other financial institutions from time to time parties thereto(the “Lenders”), THE BANK OF NOVA SCOTIA, as administrative agent (in such capacity, the“Administrative Agent”), CALYON NEW YORK BRANCH, as syndication agent (in such capacity,the “Syndication Agent”), and REGIONS BANK (successor by merger to AmSouth Bank), asdocumentation agent (in such capacity, the “Documentation Agent”).WITNESSETH:     WHEREAS, Borrower, the Lenders, the Syndication Agent, the Administrative Agent and theDocumentation Agent are parties to the Credit Agreement; and     WHEREAS, Borrower has requested to increase the aggregate amount per calendar year forRestricted Payments from $12,500,000 to $100,000,000 under Section 7.6 of the CreditAgreement, and the Lenders and the Administrative Agent are agreeable to such request upon theterms and subject to the conditions set forth herein;     NOW, THEREFORE, in consideration of the premises herein contained and for other good andvaluable consideration, the receipt of which is hereby acknowledged, the parties hereto agree asfollows:     1. Defined Terms. Unless otherwise defined herein, capitalized terms used hereinwhich are defined in the Credit Agreement are used herein as therein defined.     2. Amendments to Section 7.6(c) of the Credit Agreement. Section 7.6(c) of the CreditAgreement is hereby amended by deleting the reference to “$12,500,000” therein and inserting“$100,000,000” in place thereof.     3. Conditions to Effectiveness. This Amendment shall become effective on the firstdate on which each of the conditions set forth in this Section 3 is satisfied (the “EffectiveDate”):     (a) The Administrative Agent shall have received duly executed counterparts of thisAmendment from the Borrower and Lenders constituting not less than the Majority Lenders; and     (b) The Borrower shall have confirmed and acknowledged to the Administrative Agent andthe Lenders, and by its execution and delivery of this Amendment the Borrower does herebyconfirm and acknowledge to the Administrative Agent and the Lenders, that (i) the execution,delivery and performance of this Amendment has been duly authorized by all requisitecorporate action on the part of the Borrower; (ii) the Credit Agreement and each other LoanDocument to which it is a party constitute valid and legally binding agreements enforceableagainst the Borrower in accordance with their respective terms, except as suchenforceability may be limited by bankruptcy, insolvency, reorganization, moratorium,fraudulent transfer or other similar laws relating to or affecting the enforcement of creditors’ rights generally and bygeneral principles of equity, (iii) the representations and warranties by the Borrowercontained in the Credit Agreement and in the other Loan Documents are true and correct onand as of the date hereof in all material respects as though made as of the date hereof, and(iv) no Default or Event of Default exists under the Credit Agreement or any of the otherLoan Documents.     4. Reference to and Effect on the Loan Documents; Limited Effect. On and after thedate hereof, each reference in the Credit Agreement to “this Agreement”, “hereunder”, “hereof” orwords of like import referring to the Credit Agreement, and each reference in the other LoanDocuments to “the Credit Agreement”, “thereunder”, “thereof” or words of like import referring tothe Credit Agreement, shall mean and be a reference to the Credit Agreement as amended hereby. Theexecution, delivery and effectiveness of this Amendment shall not, except as expressly providedherein, operate as a waiver of any right, power or remedy of any Lender or the Administrative Agentunder any of the Loan Documents, nor constitute a waiver of any provisions of any of the LoanDocuments. Except as expressly amended herein, all of the provisions and covenants of the CreditAgreement and the other Loan Documents are and shall continue to remain in full force and effect inaccordance with the terms thereof and are hereby in all respects ratified and confirmed.     5. Counterparts. This Amendment may be executed by one or more of the parties heretoin any number of separate counterparts (which may include counterparts delivered by facsimiletransmission) and all of said counterparts taken together shall be deemed to constitute one and thesame instrument. Any executed counterpart delivered by facsimile transmission shall be effectiveas an original for all purposes hereof. The execution and delivery of this Amendment by any Lendershall be binding upon each of its successors and assigns (including transferees or Participants ofits Commitments and Loans in whole or in part prior to effectiveness hereof) and binding in respectof all of its Commitments and Loans, including any acquired subsequent to its execution anddelivery hereof and prior to the effectiveness hereof.
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     6. GOVERNING LAW.     (a) THIS AMENDMENT SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAW OFTHE STATE OF TEXAS APPLICABLE TO AGREEMENTS MADE AND TO BE PERFORMED ENTIRELY WITHIN SUCHSTATE (WITHOUT GIVING EFFECT TO THE PRINCIPLES THEREOF RELATING TO CONFLICT OF LAW;PROVIDED THAT THE ADMINISTRATIVE AGENT AND EACH LENDER SHALL RETAIN ALL RIGHTSARISING UNDER FEDERAL LAW).     (b) ANY LEGAL ACTION OR PROCEEDING WITH RESPECT TO THIS AMENDMENT OR ANY OTHER LOANDOCUMENT MAY BE BROUGHT IN THE COURTS OF THE STATE OF TEXAS SITTING IN HOUSTON, TEXAS OR OFTHE UNITED STATES FOR THE SOUTHERN DISTRICT OF SUCH STATE, AND BY EXECUTION AND DELIVERY OFTHIS AGREEMENT, THE BORROWER, THE ADMINISTRATIVE AGENT AND EACH LENDER CONSENTS, FOR ITSELFAND IN RESPECT OF ITS PROPERTY, TO THE NON-EXCLUSIVE JURISDICTION OF THOSE COURTS. THE BORROWER, THE ADMINISTRATIVE AGENT AND EACH LENDER IRREVOCABLYWAIVES ANY OBJECTION, INCLUDING ANY OBJECTION TO THE LAYING OF VENUE OR BASED ON THE GROUNDSOF FORUM *NON CONVENIENS*, WHICH IT MAY NOW OR HEREAFTER HAVE TO THE BRINGING OF ANY ACTION ORPROCEEDING IN SUCH JURISDICTION IN RESPECT OF ANY LOAN DOCUMENT OR OTHER DOCUMENT RELATEDTHERETO. THE BORROWER, THE ADMINISTRATIVE AGENT AND EACH LENDER WAIVES PERSONAL SERVICE OFANY SUMMONS, COMPLAINT OR OTHER PROCESS, WHICH MAY BE MADE BY ANY OTHER MEANS PERMITTED BYTHE LAW OF SUCH STATE.     7. Waiver of Right to Trial by Jury. EACH PARTY TO THIS AMENDMENT HEREBY EXPRESSLYWAIVES ANY RIGHT TO TRIAL BY JURY OF ANY CLAIM, DEMAND, ACTION OR CAUSE OF ACTION ARISING UNDER ANYLOAN DOCUMENT OR IN ANY WAY CONNECTED WITH OR RELATED OR INCIDENTAL TO THE DEALINGS OF THE PARTIESHERETO OR ANY OF THEM WITH RESPECT TO ANY LOAN DOCUMENT, OR THE TRANSACTIONS RELATED THERETO, INEACH CASE WHETHER NOW EXISTING OR HEREAFTER ARISING, AND WHETHER FOUNDED IN CONTRACT OR TORT OROTHERWISE; AND EACH PARTY HEREBY AGREES AND CONSENTS THAT ANY SUCH CLAIM, DEMAND, ACTION OR CAUSEOF ACTION SHALL BE DECIDED BY COURT TRIAL WITHOUT A JURY, AND THAT ANY PARTY TO THIS AGREEMENT MAYFILE AN ORIGINAL COUNTERPART OR A COPY OF THIS SECTION WITH ANY COURT AS WRITTEN EVIDENCE OF THECONSENT OF THE SIGNATORIES HERETO TO THE WAIVER OF THEIR RIGHT TO TRIAL BY JURY.     8. ENTIRE AGREEMENT. The Credit Agreement, as amended by this Amendment, togetherwith the other Loan Documents, comprises the complete and integrated agreement of the parties onthe subject matter hereof and thereof and supersedes all prior agreements, written or oral, on suchsubject matter. **THE CREDIT AGREEMENT, AS AMENDED BY THIS AGREEMENT, AND THE OTHER LOAN DOCUMENTSREPRESENT THE FINAL AGREEMENT BETWEEN THE PARTIES AND MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR,CONTEMPORANEOUS, OR SUBSEQUENT ORAL AGREEMENTS OF THE PARTIES. THERE ARE NO UNWRITTEN ORALAGREEMENTS BETWEEN THE PARTIES.**
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