According to the Net::FTP entry at CPAN, this module works fine with Win32. It's strange that you'd have some libnet modules but not others. There's nothing binary about Net::FTP; it's 100% Perl, so I don't know why this wouldn't work for you on your platform.

Try digging a little deeper with ActiveState (if you're using ActiveState's Perl), or look into installing the module from CPAN.