This is probably better suited for the Graphics and Displays forum, and a mod can probably fix that, but I will try answer your question for you here anyhow.
The quick answer, is probably not. You should be able to replace the power of the 9800gt for about $100, but probably not a sizable upgrade. Since the old one is dead and you need a replacement, just go for best card you can afford. If that budget can be stretched a bit, a 5750 might be a solid choice for a decent upgrade, or even a 5770 (which matches/outperforms a 4870).
Pretty much what im trying to do is just get something better (not a HUGE upgrade or sizable one) just so I can run the games I was with my 9800 with a little bit more power.
If you can rec. any cards at all that are a upgrade for about 100, thats fine. It will help me out a lot, like I said I'm not trying to blow my old card out of the water I just want something slightly better.
Should outperform the 9800gt at least a little bit, and use similar, if not less power. Plus, with XFX you will have a double lifetime warranty, so if any other destructive friends leave their mark on it, you have an avenue of compensation. Double lifetime means that if you sell it, the first second-hand owner also has a lifetime warranty, increasing it's resale value.