you can:
a) get a shell replacement like
litestep
b) get your uxtheme.dll hacked.
for litestep, go here and download LS themes >>
-litestep>>
Code:
http://customize.org/litestep
NOT MY SCREEN
author: pjdark
for hacked uxtheme.dll files, go here >>
-visual style>>
Code:
http://customize.org/xpthemes
my most recent screenshot