Win32::NetResource is indeed the module to use, assuming you are running from a Windows computer. It is included in the base install of ActiveState Perl, so no additional install is necessary.

The following code will list all shared folders on MyHost

    use strict;
    use Win32::NetResource qw(:DEFAULT GetSharedResources GetError);
    if (GetSharedResources(my $resources, RESOURCETYPE_DISK,
                           { RemoteName => "\\\\MyHost"}))
    {
        foreach my $href (@$resources) {
            print "-----\n";
            foreach(keys %$href) { print "$_: $href->{$_}\n"; }
        }
    }
[download]

HTH
digger