Can't locate Gtk2.pm

Got a bit of a puzzle, I'm getting a message saying

"Can't locate Gtk2.pm in @INC"

I've searched the drive and it really is nowhere to be found.

The system is running OS X - 10.6.6.

I have installed gtk2 using the command "sudo port install gtk2" @ macports.

Then, I installed p5-gtk2 using macports.

I found an old post from 2009 on this mailing list suggesting other perl modules

to be loaded, so I used the command "port search p5-gtk2" and downloaded

the 3 modules these include p5-gtk2-gladexml and p5-gtk2-sourceview.

I still get the error message "Can't locate Gtk2.pm in @INC"

Suggestions? Thanks.