I've been using a 21 inch Sony Trinitron flat screen CRT on my older pc (2003) with a nvidia geforce 2 mx400 card. My monitor is being looked at by a monitor repair shop because the image has gone concave on the sides. If they can't repair it, and I have to get a new monitor, my question is this: will a new lcd digital monitor be able to work with my nvidia card? I see an extra hookup that looks different from the analog hookup on the nvidia slot on the back side of my pc, but I'm not sure if that means I can use a more modern monitor or will I have to find another CRT. Thanks in advance for nay help.
Those guys don't know what they're talking about. Really, the adapter they are refering to is for breaking out a VGA signal out of a combination connector (DVI-I) which has extra pins for VGA. It won't work for going in the reverse direction.
If your card has a DVI output (looks like that adapter), you can use a DVI cable to your new monitor, assuming the monitor has a DVI input (most flat panels do).
If your card doesn't have DVI output but only has VGA, and your monitor has VGA input, you can use a VGA cable.
If your monitor ONLY has DVI inputs and your card ONLY has VGA and a round connector, you'll need a new card.
The round connector typically supports S-Video (an old TV standard of low resolution) and, via breakout adapter, Composite video (an even older, lower-resolution TV standard). So, the round connector is a no-go for computer monitors.