problems finding the right Tcl/Tk to go with Python 2.6

I have installed Python 2.6.4 and matplotlib-0.99.1 on my windows machine (XP). When trying to use Tkinter I get an error message that says it can not find the right version of Tcl.

Where can I find the right binaries to load on my windows machine?

cheers, Dan

Daniel A. Klinglesmith III
Magdalena Ridge Observatory
New Mexico Tech
(575) 835-6802