Archived from groups: microsoft.public.windowsxp.customize,microsoft.public.windowsxp.general (More info?)
I'm new to the customize group , but I'd say that by design those buttons are
push button types, you'd have to go third party app's for that one. But no
doubt that'd end up in a shell replacement of some type.
Or at least there might be a way to do it in the registry , but that might
have adverse effects on the shell behavior.
if you're interested in third party apps for modding the shell.
A good place to start would be www.wincustomize.com , most of their software
has been Signed as trusted by Microsoft.