Follow the steps outlined here:
!---IMPORTANT: Please Follow These Steps Before Posting---!
If none of those help, post back with your system specs.
Info on how to post your system specs can be found here:
http://www.techsupportforum.com/558208-post1.html
Hope this helps.
__________________
"Come forth for the cattle call
Confront the evil river you can't control
Wicked ways and venomous eyes
Just human nature in disguise..."- Clouds over California