in reply to Version(s) of Perl
On the same machine, if I print out the version number form a CGI (Perl) script I get 5.0.
I'd like to see the code that you're using to get that result. It seems very unlikely to me that any Windows machine is running Perl 5.0.
For lots of useful information about running Perl on a Windows machine, see the Win32 Perl Wiki.