PROBLEM WITH JAGGED EDGES NEW MOBO 8800GTS 320MB

I purchase a new mobo while my other one is getting fixed (warranty) since i installed the new mobo i've got jagged edges (stairsteps like lines) problem, i downloaded all the latest drivers from nvidia website and tryed differant resolutions played with settings still cant fix the jagged edges this might be a dumb question but the mobo i had was a nforce 590 the new one is a nforce4 could this be the reason maybe nforce4 has less performance ?

If anyone could help that would be much appreciated.

rig
amd 4600 dual core
8800gts 320mb
2gig@800MHz

Hi rammedstein

I tryed AA-AF at differant settings 4x 8x 16x increase refresh rate from 60-
70 picture quality was bettter but still had problem with jagged edges.

thanks for your help

Hi Mike

The resolution is 1280x1024 on games or 1024x768 standard 19'lcd 8ms

Where do I find and how do I use ccleaner to remove driver remains maybe this could be the problem.

Thanks

Google 'ccleaner download' If you have your desktop at 1024x768 that is NOT native resolution, and will give 'Jaggies' If you go to Display Properties - Appearance tab, Effects button. Second feature down gives 2 options to smooth edges of screen fonts.

Mike.