Um, you lost me after the part with task manager. I was just curious what would I need to do to compile myself? From what my system specs are should I get more memory, video card, ect? Or does that not even matter? I have been having this problem with my PC shuting down a lot lately. Whenever I try to play some games for more than 20 mins everything crashes and shuts down. Does that mean something is seriously wrong with my PC? I just don't want to keep having to bug people in the future to compile for me, I need to now what I should do to address this issue.

If your computer randomly shuts down after a period of time it may be overheating! On older PC's the thermal bonding which contacts your processor to your heatsink can wear away, i found that replacing this can really help! You may want to try upgrading you PC fan (exhaust or intake)

This may not be the problem though! Open the task manager (CTRL + ALT + DELETE) and monitor you CPU and memory usage, long periods of high CPU usage can contribute to overheating! Though i think if you increase the process priority too high the resources neccessary for windows task get used up and therefore will cause you computer to crash (never set the priority level to 'realtime')

Hmm, that is what I feared. Although in the long run not to bad of a problem. I will look into getting a new fan. I was thinking of getting a new PSU aswell. Mine is only 350 watt, which appears to be kinda low. Also how come some games use to work fine a year ago, but know they make my PC crash? Thanks for the help!

Ive found that if your computer runs at least 8 hrs a day then it should have it's covers off once a year and all heatsinks, fan blades and vents be cleaned of built up fluff, dust and grime.
This will help keep thing running as cool as possible.

For performance improvements on older machines, keeping costs at a minimum, more ram is the best and cheapest option.

Grassy

Alright thanks for telling me Grassy! Also thank you very much for compiling again for me! I hope to release today if everything goes well.

No problems at all mate, glad to help out.

Well my map is released you can download it here:

http://callofduty.filefront.com/file/Reusville;61981

Thanks for the help grassy! By the way I think I may have fixed my PC I opened it up like you said and took a little air compressor to its inside especially the fans and PSU and I must have blown out enough dust to fill a cup. I think it was causing my PC to overheat.