just press the 'prt scr' button on your keyboard to gete a
snap shot of your current screen on to your clipboard,
then, go to programs > accessories > paint and then paste
the contents of the clipboard on to the new page. Click
yes to the dialog box and wa-la. there's your desktop
ready to print. tip- check the print preveiw to set up
page so it prints on one page.

There is a very handy print Screen program which can be
downloaded from ZDnet.com or PCWorld.com. It allows you
select the exact portion of the screen you want to print.
The name of the software is ScreenPrint32v3 and it's free!