Well, then why don't you buy just an XP 1700? It's even cheaper, you can overclock to near 2100, save some money for your future upgrade and I'm sure you won't notice too much difference. Also I you are afraid of what can happen, you risk less money and 1700 generates much less heat than 2100.
I would also recommend the 2100+. True, the 2400+ and 2600+ are faster, but how much speed do you need? If you do a lot of AutoCad, video editing, or other processor intensive activities, then maybe it is worth it, but otherwise I am still using my 1.4 GHz with a GeForce4 Ti4200 and I can do everything just fine and I play my games at high frame rates.
If you are into games, get the 2100+ and use the saved money on a better video card... If you are using other CPU intensive apps, get the 2600+ and get a cheaper video card. Even with the video card I think that the GF4Ti4200 is good enough for most games.
Many times we just like getting the best and forget to consider what would have been good enough. If you have enough money to throw around, then the best is great. I don't however.
As for the Heatsink and Fan, use the supplied one if you get retail. If you opt for OEM, get an upgraded fan because they rarely include one that is adequate. This is based on the assumption that you wouldn't overclock the CPU.<P ID="edit"><FONT SIZE=-1><EM>Edited by Lamoni on 11/27/02 01:31 PM.</EM></FONT></P>
Lamoni's right. Figure out what you want to do and go for it. Don't buy the Best just because. It's wasting money especially if you don't need that much performance. You're way better off buying what you need and saving your cash for a peripheral (digital camera?) or for future upgrades.