Question 2: check out winGTK and wGLADE

Question 3: check out Mastering Perl/Tk. Here is a sample chapter. The one you are probably referring to, Learning Perl/TK, is old, but still not a bad book to start on. I'd get 'Mastering' instead.

jeffa

L-LL-L--L-LL-L--L-LL-L--
-R--R-RR-R--R-RR-R--R-RR
B--B--B--B--B--B--B--B--
H---H---H---H---H---H---
(the triplet paradiddle with high-hat)