I think the latest ActiveState is fine with basic Tk.
Here is what I'm using:

C:\Projects>perl -v

This is perl, v5.10.0 built for MSWin32-x86-multi-thread
(with 5 registered patches, see perl -V for more detail)

Copyright 1987-2007, Larry Wall

Binary build 1004 [287188] provided by ActiveState 
http://www.ActiveState.com
Built Sep  3 2008 13:16:37
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