If you are talking about the big ol' Panaflo Orb that was originally for workstations, go to overclockers.com and scroll down, there is a write up about putting one on Socket CPUs, and also on a slot Athlon. Decent results with lots of effort. I have one on my PII, and it looks like more trouble than it is worth to put on a socket CPU. Looks pretty easy to put on a slot Athlon, and should perform fairly well and be nice and quiet.
If you are talking about an Agilent Articooler, the results have been wildly mixed (some people rave, others have horror stories), as searching this forum will reveal.