<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>4
<FILENAME>mbss1ex51041008.txt
<TEXT>

                                                                     Exhibit 5.1


                              Colbert Johnston LLP
                         Attorneys and Counselors at Law




                                 April 10, 2008



MB Software Corporation
777 Main Street, Suite 3100
Fort Worth, Texas 76102


Ladies and Gentlemen:

         This firm has acted as counsel  for MB  Software  Corporation,  a Texas
corporation (the "Company"), in connection with the preparation of the Company's
Registration Statement on Form S-1 (the "Registration Statement"), in connection
with the proposed  offering of an aggregate of aggregate of 3,993,104  shares of
the Company's common stock, $.001 par value per share ("Common Stock"), of which
1,286,207 shares are issued and  outstanding,  and 2,706,897 shares are issuable
upon  exercise of  outstanding  notes and warrants  (the "Notes and  Warrants").
Unless otherwise  defined herein,  capitalized terms used and not herein defined
have the respective meaning given such term in the Registration Statement.

         In reaching the opinions set forth  herein,  this firm has reviewed the
Company's  Articles of Incorporation and Bylaws,  minutes of the meetings of the
Company's  Board of  Directors,  certificates  of  public  officials,  and other
matters that this firm deemed relevant.

         Based on the  foregoing,  we are of the opinion that (a) the  1,286,207
shares of issued and outstanding Common Stock have been duly authorized, and are
validly issued,  fully paid and non-assessable;  and (b) the 2,706,897 shares of
Common Stock issuable upon  conversion of the Notes and exercise of the Warrants
have been duly authorized and, when issued upon such exercise in accordance with
the terms of the Notes and Warrants and following  receipt by the Company of the
consideration  therefor,  shall  be duly  and  validly  issued,  fully  paid and
nonassessable.

         The opinion  expressed  above is subject to the following  assumptions,
exceptions,  and qualifications:  (a) all information contained in all documents
reviewed by this firm is true and correct,  (b) all  signatures on all documents
reviewed by this firm are genuine,  (c) all documents  submitted to this firm as
originals are true and complete,  (d) all documents submitted as copies are true
and complete  copies of the originals  thereof,  (e) each natural person signing
any  document  reviewed  by this firm had the legal  capacity to do so, (f) each
person signing in a representative  capacity any document  reviewed by this firm


             6021 Morriss Road, Suite 101, Flower Mound, Texas 75028
                   Phone: (972) 724-3338 o Fax: (972) 724-1922

<PAGE>

MB Software Corporation
April 10, 2008
Page 2


had  authority to sign in such  capacity,  and (d) the laws of any  jurisdiction
other than Texas that govern any of the  documents  reviewed by this firm do not
modify the terms that appear in any such document.

         The  opinions  expressed  above are limited to the laws of the State of
Texas  and the  federal  laws of the  United  States  of  America.  We assume no
obligation to inform you of any facts,  circumstances,  events or changes in the
law that may  hereafter be brought to our  attention  that may alter,  affect or
modify the opinion expressed herein.

         This  opinion  letter may be filed as an  exhibit  to the  Registration
Statement.  In giving this  consent,  this firm does not  thereby  admit that it
comes within the category of persons whose  consent is required  under section 7
of the Securities Act of 1933, as amended,  or the rules and  regulations of the
Securities and Exchange Commission promulgated thereunder.


                                                     Very truly yours,

                                                     /s/ Colbert Johnston LLP

                                                     COLBERT JOHNSTON LLP


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