PC Apex have a new review up which covers two great coolers by Zalman
Installation was child's play, at least for my socket 939 CPU. You simply interlock the mounting clip pieces around the base plate and clip the heat sink onto the stock motherboard retention frame. You do need to check the clearance on your motherboard capacitors and any heat sinks sprinkled around the motherboard. On the DFI LanParty UT nF4 Ultra-D, one of the heat pipes barely cleared a mosfet heat sink. Low profile coolers do have their rawbacks, and the CNPS8000 is no exception. Users with Intel CPUs must replace the retention frame.Zalman CNPS8000 CPU & VF900-Cu GPU Cooler Review
Installing the VF900 is just as straightforward as the CNPS8000. You lay it on a flat surface, put some thermal paste on the GPU and line all the little pieces up the way its shown in the exploded installation view in the user manual. The user manual is very well written and has plenty of step-by-step explanations and illustrations so that even the biggest noobs won't have a problem.