It is definitely overheating. Also, how many Watts is your power supply?
If you know someone who is very good with modding and working with computers, get them to set up watercooling for your box.
If you can't, one thing you can do, is get two large fans...each around 2 feet high and have them blow into the computer from opposite sides with the side panels open.
Or, if you have an air conditioner running nearby, take some large tubing and put one end onto a vent and the other onto an intake fan hole/grill. Duct tape it if you have to. By doing this, it will bring COLD air into the computer all the time thus lowering the average temperature of the box. It is pretty easy to do, and if my parents would let me, that is how I would cool my computer. 2 fans in the back and one in the center which is intake and is connected via pipe to the air conditioner.
Another thing I highly recommend you to do, is to sleeve all of your wires in your computer. Tape them to the sides of the case so there is room for air to flow and so that it is controlled. Group all unused wires, such as those from the power supply and put them all in some bay or tape them to the top of the case. By having wiring out of the way, the air flow is unobstructed and therefore more efficient.
A rather innovative thing you can do is take one of the bottom case expansion panels and open it. Take the little metal plate and drill two holes in it. Attach a stardard 80mm case fan on to the side that goes into your computer and position it such that it will blow into your video card. Hook it up and hope it cools it down a bit. This actually works, and there are even some fans like these sold for $5-10, but why buy one for so much when making it yourself is so much more valuable to computer modding experience and a lot cheaper via do-it-yourself ($0.50 is the fan approximately). It doesn't have to be a Thermaltake or whatever brand fan to do this job. It will just GUARANTEE that air will circulate around your graphics card.
A final thing you can do isn't that innovative, but it works for me. Take some of that colder-than-ice stuff you normally put in your freezer or cooler and put it on top of your computer or onto or next to the intake fan(s). I run a 9800Pro and my motherboard temps are around 38-40 Celsius normally depending on what I am doing. When I put this stuff on the case or near the intake fans, it decreases by 2-3 Celsius pretty quickly. One thing I would suggest though is getting some old newspapers and putting the stuff on them as opposed to straight on the case. Water and electrical supplies don't go well hand-in-hand, which is why I suggest you have a pro do your watercooling instalation if you are going to take that path.
Anyway, good luck in your cooling attempts. Post back on your attempts/failures/successes. I still haven't had a watercooling system for example, nor managed to put the tubing from air conditioner to computer due to other people living in the same place as I do. Would be nice to know the outcomes.
Edit: As usual I mention that there is one awesome program you should take advantage for monitoring your system specs and temperatures:
Everest. It is really nice and good if you are having trouble with stuff and want to export all the info about your computer to paste on a forum or other.
Edit: Edit: Here is a page courtesy of Tigerdirect where you can buy expansion slot fans:
Click me! They cost ~$5-20. Of course, as aforementioned, it is so much more valuable to do it yourself. It is cheap, efficient, and has some experience value to it, especially since you aren't computer savvy.
Edited, Mon Jun 13 16:30:25 2005 by Bagira Edited, Mon Jun 13 16:43:02 2005 by Bagira