Just to add to\clarify some things you said:
- ActiveState has PerlEx and PerlIIS dlls - these run in-process like ASP, but the scripts you write for them are the same as standard CGI scripts written in Perl. So they are quicker, etc than perl.exe, but other than that - no difference.
- Regular expressions (based on perlre) are available now for both VBScript and JScript.
- You can write you own classes in VBScript so you can reuse objects without using OLE.
I have sometimes used the PerlIIS dll for this because it's free and in-process. If you do this - don't forget to undef\close the objects you create or they'll hang around until you kill the webserver process.
$ perldoc perldoc