PHP mssql_connect problem

Dear Experts; I have installed PHP Fast-cgi on IIS 7开发者_如何学Python . I am using Windows R2 2008 Enterprise. mssql_connect function doesnt run. I tried to install ntwdblib.dll on C:\windows\SysWOW64 and I called regsvr32.exe ntvlib.dll in command prompt. But I cant it. How can I solve this problem?

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"I tried to install ntwdblib.dll on C:\windows\SysWOW64 and I called regsvr32.exe ntvlib.dll in command prompt. But I cant it. "

What error message showed? Instead of pasting "regsvr32.exe ntvlib.dll" into the run window, type "cmd" [without quote marks] into the run box, then type the command in the cmd.