If I'm understanding correctly what you're asking, the solution is as follows: To map .PL to perl just like a .CGI file, in any Explorer window go to Tools -> Folder Options -> tab to File Types -> scroll to .PL. If it's not there, add a New one. Copy to that record the same settings from whatever you have .CGI mapped in that list, which basically consists of the path to your Perl Command Line Interpretor (usually c:\perl\bin\perl.exe).