PHP problem calling a COM from the Web Server

Hello, I have a problem using COM and PHP. I create a simple script that call a COM that I create in VB6. When I call the script from the command prompt all works OK, but if I call the script from the web server (IIS) I get the following results: - If I use the ISAPI dll: Unable to obtain IDispatch interface for CLSID .... - If I use the PHP exe: The page doesn't respond. Can any help me telling how can I get the same result that I get when call the PHP interpreter from the command prompt? Regards and thanks in advance