Display Issues need help...new video card

[Dagg]

I had a geforce4 working in my cab for a few year I think it had some automated setting when I switched to TV mode. 

So I found an old geforce3 to use in the short term.  I see the boot up screens ok then the windows xp loading screen ok but when it gets to the login user or desktop its flickering so bad I cannot even make it out. 

I tried setting 640x480 and have even tried changing the hertz from 60 to 70 to 75, I think I used to have to do this on my old card but it had a tv setting with a particular hertz next to it.

So what hertz do I need for a jvc 27inch crt over s video?  I really need to get this working I am having a big party Monday and alot of folks looking forward to some arcade fun.

Thanks in advance for an suggestions. 

I even downloaded the Nvidia control panel but not seeing anything helpful there

[Malenko]

American TVs run at 60Hz (NTSC standard)

do you have the TV and PC monitor on at the same time?

[Dagg]

I tried both and I tried 1 only neither worked.

I finally resolved this by swapping the geforce3 ti200 with my wifes geforce 5500fx.