Win32 maps file extension to executable. To have the best of both worlds leave current .pl extension and perl.exe association intact.

First create a new extension - say .plt In explorer Tools|Folder Options|File Types|New and link it to perl.exe. Then for IIS add .plt to the scriptmap

.pl     C:\perl\bin\perl.exe %s %s
.plt    C:\perl\bin\perl.exe -T %s %s
[download]

This will associate the taint mode perl with .plt. Now all your current .pl scripts continue to run without taint mode. If you want taint mode just change the file extension from .pl to .plt.

There is a thread from ? dws on this somewhere here. Update Found it for you: Re: -T t t t t t o o late folks