wow, i wuldnt dare do anything like that, lemme tell you my hot hot story.
i used to have an 800 Mhz p3, and a 7200 rpm hard drive, why mention the harddrive you ask? because this 2 year old system didnt come with any case fans and the high speed drive this summer heated up to 49 degrees celsius and caused large sections of registry and windows itself to go bad. the sections it was reading corrupted from the heat. well i ended up reformatting twice and then it worked fine for a few days with me keeping a close watch on the heat and never running file sharing more than an hour.
i was downloading quake 2 on IRC and the continuous use heated up the drive and wrecked it again, this time taking out some of the motherboard as well. i didnt realize that, turned it off and the next day took it in to the shop. they couldnt get it to even post booting screen, and knew something serious was wrong. replaced the processor riser (P3 was Slot A, vertical on a riser card) but that didnt work, and ended up replacing the whole motherboard, of course they dont make the same old model so the new one is 833Mhz celeron, they claim celeron "doesnt suck as much as you say it does", i then went on ebay and got meself one case fan and three harddrive fans for $13 and now my drive runs at 37 degrees celsius, a much safer, yet still hot, condition.
i dont know how hot the processor is, the new celeron has a much larger heatsink than my old one because now that it is flat on the motherboard it can take the weight
it looks to be aluminum, and i dont know anything about that sort of thing. i just know that it runs gta3 and winamp and kazaa and XP nicely, and that i want one of those plexiglass and neon light cases you see on overclocker's websites.