I use Registry Mechanic from PC Tools - been using their stuff since 1984 !!!
Mind you, it's the ONLY product that they now offer that I will use... Spyware Doctor is a disastrous joke !
SUN do offer some nifty uninstaller packages...
Hey, you don't need to be the so-called geek to be smart enough to format and clean install the whole farm and circus every 6 months ! A lot of the members here would benefit enormously from doing so... It's only absolutely terrifying the first 3 or 4 times, right ?
and maybe seriously consider using a better p2p client that is stable and where the developers are not deaf and blind, hmmm ?