Okay the perl modules are packaged.
gtk-perl WAS a freakn' bugger. The solution was simple, but the discovery was not. So you didn't do anything wrong

You'll need to install:
gtk-perl-0.7009-i586-1vl59.tlz
perl-XML-Parser-2.34-i586-1vl59
perl-XML-Writer-0.603-i586-1vl59
I was working on XML-Parser for a while, then I discovered I packaged that a loooooong time ago

Just make sure testing is enabled and update your sources and you should find them.
I hope like heck that helps you.
Oh yeah... the announcement.
http://www.vectorlinux.com/forum2/index.php?topic=5445.msg37338#msg37338