in reply to compile one version for Several OS

No. PAR is a packer (packager?). It does not "compile". Now theoretically this could be accomplished, but ...

update: Not a bad idea. I imagine PAR-1.00 might being smart enough to seek out ppm package repositories, download all the neccessary bits to pack executables for as many platforms as possible. Now if we only had more ppm repositories....

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.