debug classic ASP in iis7

Hello,

I want to debug classic ASP (jscript) code on Vista. Im getting the error in Visual Studio 2008 "This type of page is not served".

This is because SP1 is not installed for VS2008. Because I cannot install (no more room on C drive) i'm trying to figure out

1. what to exactly configure in IIS7 (set almost everything related to ASP and debugging to true)
2. what command or something to use to actually debug since i cannot use VS2008

Thx,
Eddy