I have been using the 'PortableZIP editon' of Strawberry Perl to share scripts at work. I use it over the network. So, I uncompressed the Strawberry zip file into a directory on a network share. Now, users can run portableshell.bat from the top-level directory.

This way, one can install cpan modules or your own modules once and everyone will have access to them. The only problem I seem to have with this approach is the occasional cpan module that runs fine on unix but is broken on windows. I tend to develop on a unix machine so I just need to be careful when I start using a new dependency. It's a bit frustrating to introduce a dependency just to find out that it doesn't work on Strawberry.