How to create a file on users XP desktop

[goldtech]

Can anyone link me or explain the following:

I open a file in a python script. I want the new file's location to be
on the user's desktop in a Windows XP environment.  fileHandle = open
(....., 'w' )  what I guess I'm looking for is an environmental
variable that will usually be correct on most XP desktops and will
work in the open statement. Or is there another way?

Thanks