To run Pi3Perl and PSP, Pi3Web 2.0b2 and ActiveState's ActivePerl 5.6.1 is required.
Download and execute the Pi3Perl installation package. You should enter the path to Pi3Web, if it isn't c:\Pi3Web. After installation of the Pi3Web extension, a 2nd installer want's to add the Pi3:: package to the existing ActivePerl installation.
Download the Pi3Perl .tar.gz archive. It contains both, the Pi3Perl extensions for the Pi3Web server and the Pi3:: package to be added to ActiveState Perl 5.6.1.