mssql extension not loading iis6

I am confused with the following problem: If I run "php -m " from the command prompt I see the mssql module is listed as loaded. However from the webpage running phpinfo() it will not show as loaded and will not run any dbconnect code. I have gone over numerous howtos and seeing how I have another server that is working and from which I copied everything, I am at a loss to explain it. details: Windows 2003 server IIS6 ISAPI mode; ini file is being read properly; I can add and remove other dlls so the perms are correct. I have downloaded the lastes versions as well as trying 5.1.6 I have gone through the following as well: http://www.peterguy.com/php/install_iis6.html Has anyone ever run into this before?