Monitor Resolution Problem

[AdamBragar]

I just got the Dell 3007 Monitor for my new computer (HP Pavillion). I have a NVIDIA GForce 7500 LE video card for the monitor. Naturally, when I got the monitor hooked up, I wanted to see how many tables I could fit on the screen. However, I realized the resolution was too low. When I tried to put the resolution at 2048 x 1536, the monitor stopped showing images and basically went on the fritz only showing pixilated lines. The max resolution I can get is 1280 x 800 which doesn't seem right.

Any ideas about what is going on? Any ideas on how to fix this problem and get the max resolution for this monitor?

Thanks!