Unless you have another version of perl installed, you can use perl.exe as the command to execute. The ActiveState documentation contains all of the information that you need to associate .pl scripts with perl.exe. This should have been set up when you did your perl install.

One problem to look out for is permissions. You need to make sure that the IIS virtual directory that contains your perl script has read / execute script access.

If you are running on a locked down machine (where the NTFS file permissions have been set to limit access) then you also need to make sure that the perl executable and any modules data files etc. can be read and executed by the IIS_Server user account. Typically the Users group can be granted read / execute access.

Inman