Monk brother set_uk,
For rapid GUI creation I allways use PDesign
UPDATE: Well, I did use it. But that darn site changed and the program is gone.

PDesign stands for Visual Perl/Tk-Designer. It's Freeware (doh)- and helps you quickly design the layout and positioning of Perl-Tk forms. Very handy and pretty intuitive. Downside is, it runs on windows ;(
But don't let that drag you down. It saved me shitloads of time.

Hmm, I did find Tikiartist and it sounds like it's almost the same thing.

Good luck set_uk,