Won't go full screen and "twitches"

[asforoneday]

I'm on 1024x768 Medium quality. My problem is, when the game launches, it launches in window and for some reason effectively causes the screen to do this (yes, this fast and obnoxiously):

http://i11.photobucket.com/albums/a183/alterna_/twitch.gif

If anyone can help me I'd be more than appreciative.

[edit] When I move the screen around, there's a small image in the middle. It seems like the program is trying to morph the image to be windowed but also the full screen image is still there.

[Wizardanim]

Read the thread wrong so had to edit post... have you checked monitor refresh rates / or have any screen capture programs running? Ive had similar issues before with different programs based upon those issues.