After some obvious tests I thought, "Sure, why not?" and decided to see what would happen should I change the %userprofile% environment variable. I took the easy way out and ran it through Pstart, but if you wanted to use a batch file you could set it up just as well...
SET USERPROFILE=\theGTK
And you can substitute "\theGTK" for whatever you please. Even the location of your .purple directory. Just make sure to use relative paths.
