Didn't realize how much time had passed.
I got 2 80mm fans, and a extension slot fan. After cleaning the dust and installing them, it stays cooler at higher loads.

One thing I feel silly about, is that there is a spot for a larger fan in the front, and I didn't notice until i was installing the ones i bought.

Thanks for all the help, I just have a few final questions.

How important is the large front fan?
What is a safe temp to aim for?
And lastly, is it safe to have it going 24/7?

Once again, thanks, and these should be my last questions.

HOLY-

I just opened my case to do some maintenance, and open a few ports. There was dust everywhere!

I cleaned it as best I could without a can of air, but there's still a lot in the nooks and cranny's...

Heh, also found out a 500GB hard drive I had left unused for forever was dead.

Anyway, I'll be heading to out later today to pick up a can and two case fans(all my case has room for).

How careful do I need to be while using the can? The main areas I need to use it are the heatsinks.

I'm using Catalyst Control Center for the temp measurements, and I'm pretty certain its Celsius since there's a C next to the number it gives me.

After some experimenting, Ive got it holding at about 91C with -v -w32 -f100000000 (no clue if -f even works that high, but it seemed to help the higher i set it), and I set my fan to 100% with rivatuner. though I only get about 13/14 Mhash/s.

Is it safe to let it work at that temp?
I'll look into fans, $5-$10 I can handle.

Also, thanks for the help so far.

I just found out about bitcoin, and I'm really excited about it.
Ive got everything set up to use my GPU, an HIS Radeon HD 4830, but every time my GPU's temp goes up past 100.

I just ran a test with the lowest clock settings in CCC, and the -v -w128 flags(what do these do anyway?), and checked my GPU's status 5 minutes later.

It was hovering at around 110 degrees, and 98% activity, and the rest off my desktop was pretty sluggish.
Thats way to hot for me to feel comfortable.

Admittedly, the only things cooling related in my PC are the power fan, the GPU fan/heatsink, and the CPU fan/heatsink, but there's gotta be a way to lower the resources being used.

I'd love to get a hard cooling solution but money is really tight right now, so unless it really cheap, I need to do something on the software side of things.

So any idea how I can keep my GPU temp down?
Any help is appreciated.