Item 4.01. Changes in Registrant’s Certifying Accountant. 
 
(i) Effective December 7, 2007, Weaver & Tidwell, LLP (“Weaver & Tidwell”), resigned as the independent certified public accountants of Vertical Computer Systems, Inc. (the “Registrant”). Weaver & Tidwell’s resignation letter was dated December 7, 2007.
 
(ii) Weaver & Tidwell’s report on the Registrant’s financial statements for either of the two fiscal years ended December 31, 2006 and 2005 did not contain an adverse opinion or a disclaimer of opinion, and was not qualified as to audit scope or accounting principles. However, Weaver & Tidwell’s report did include a paragraph regarding the Registrant's ability to continue as a going concern for either of these two fiscal years.

(iii) The decision to change accountants was not recommended or approved by the board of directors of the Registrant or the audit committee of the board of directors of the Registrant, as Weaver & Tidwell resigned. The Registrant’s board of directors will continue to recommend and approve the engagement of any new accountant.
 
(iv) During the Registrant’s two most recent fiscal years (the years ended December 31, 2006 and 2005) and subsequent interim periods (from January 1, 2007 through the date of Weaver & Tidwell’s resignation), there were no disagreements on any matter of accounting principles or practices, financial statement disclosure, or auditing scope or procedures, which disagreements, if not resolved to Weaver & Tidwell’s satisfaction, would have caused it to make reference to the subject matter of the disagreements in connection with its reports. During the Registrant’s two most recent fiscal years (the years ended December 31, 2006 and 2005) and subsequent interim periods (from January 1, 2007 through the date of Weaver & Tidwell’s resignation), Weaver & Tidwell did not advise the Registrant of any of the matters identified in paragraph (a)(1)(iv) of Item 304 of Regulation S-B.
 
 
Item 9.01. Financial Statements and Exhibits.
 
(a) Not applicable

(b) Not applicable

(c) Exhibit(s)

Exhibit Number
 
Description
 
Location
         
Exhibit 99.1
 
Consent Letter dated December 11, 2007 from Weaver & Tidwell, LLP
 
Provided herewith

 
 
 
 
 
SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Date: December 11, 2007
Vertical Computer Systems, inc.
     
     
  By:
/s/ Richard Wade
   
Name: Richard Wade
   
Title: President and Chief Executive Officer