I couldn't find any Gtkperl support for win32, since i further didn't find any comparisons between the two, having Tk already installed on my system, Gtk kind went out of sight.

Beside the (lack of?) support for win32, can you tell me, or refer me to a site telling me, the main differences between Gtk and Tk ?
- Is Gtk that much faster ?
- Does Gtk offer less/same/more extensions ?

Also i read that the Gtk for win32 seems to have some instability problems (btw. the referenceto the instability of other win32 software is a weak excuse on their own problems).