Know your modules (make sure they're cross-platform), have them installed (where you intend to run yer program), and be very aware of `perldoc perlport' (only use stuff that is portable, and deal portably with stuff like paths ... basically the core File:: modules). Aside from that, best help you could get is to post a sample so we can make it portable.

MJD says "you can't just make shit up and expect the computer to know what you mean, retardo!"

I run a Win32 PPM repository for perl 5.6.x and 5.8.x -- I take requests (README).

** The third rule of perl club is a statement of fact: pod is sexy.