I have seen the kit's to do this to the XP Athlon's.Only $12 at highspeedpc.com.I just installed a 2100+ on my Abit board.I can see that it is speedier than the tbird 1.4ghz that it replaced but I like to tweak.So how hard was it to do?Looks pretty simple as long as you have a steady hand while applying the filler and grease.The 2100+ seemed to differ so I'll have to read up on this but let us know your results.Thanks.