Sounds to me you have a joke program installed.
Some Questions in addition to TA67's:
Does this happen soon as it boots up?
Does it go sideways after you login?
if you move your cursor in the four corners does your screen return to normal?
What Operating System do you have?
Might want to Post a HiJackThis Log if it isn't like this as soon as you turn on the machine.
Edited by LoLucky, 17 January 2005 - 08:59 AM.