what is the best registry cleaner for free? jv16 powertool's registry cleaner killed my system so i don't want to use something as powerful as that. i need something that will clean up my registry of ...

i'm using xp pro, looking for a good registry cleaner, preferly free.<BR><BR>also does xp pro w/ sp1 have msconfig? i type it in run and it doesn't have it. but remember running it before sp1.