@H_404_2@Here is how to make ASP debugging work:

1. Enable ASP debugging on the server. (I also added DEBUG verb to the asp extension,but I am not sure if it is required).
2. Open classic ASP in VS 2005.
3. Set breakpoint.
4. View page in browser or run without debugging.
5. Debug | Attach to Process
6. Locate IIS ASP worker process (w3wp.exe on IIS6) which exposes x86 and Script and attach as Script.

@H_404_2@Regarding Step #1 in IIS7 – IIS > ASP > Compilation > Debugging Properties > Enable Server-side Debugging