K, sorry for the late reply but things got crazy today...
Blowhole: Never did it before, but LMAO when I did it. My case was a 54$ turbocase (which I regret buying, caveat to all: Don't get cheap on PSU, or case for that matter!
) I just outlined the shape of the fan (circular center) and drew the outline on top. I then attached the circular cutter blades and just sawed my way around. Took me about 20 minutes, then I just rubber cemented the fan blowing upward. My case only had two fan holes standard, and was trapping heat REALLY bad up top. Therefore, I don't recommend cutting anything to anyone squeamish out there, but I did have a blast doing it, and it really helped me out by blowing out my hottest region. In your "case" Matt, that case is too perty to bring blades too. But still buy the fourth fan, they're only like 5$ and not loud at all.
Wrap wires: I have a bunch of cable ties from a telecom internship. IDE's are killers, but do the best you can to at least keep them near the sides of the case and not in the traffic of airflow. Round IDE cables are sweet also, worth considering. Again, your temps are totally fine, I just happen to be addicted to tweaking anything on my PC.
Flip Fans: Yep, its that easy! Your case has those clip boxes, right? Just pop it out and pop it right back in the other way. Most fans blow in the direction of the label on the "front" in the center of the fins. Try it and check your temps.
AS3: Check it <A HREF="http://www.arcticsilver.com/as3.htm" target="_new">out</A>. Radio Shack would probably carry it, but you can easily order it online, or pick some up at a local computer store. Get the smallest container possible, because you only use half-of-a grain of rice's worth for the CPU, and a little to rub into the HSF base itself.
Good RAM and Video Card BTW
My system:
XP 2000
A7V333
512x1 PC2700 Samsung
ATI AIW 7500 (weak, I know, but damn I love that card)
Maxtor 80GB 7,200 liquid bearing ATA 133 (*snicker*)
Only change I would recommend is why not go 512? I use XP Pro and believe me, I use it!
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