Originally Posted by $n!pR
Ccleaner is the top rated free program and will do fine.
i know i use it but have found it doesnt find as many errors, it found around 60 and another reg cleaner i used found around 180, so i stopped using the reg cleaner part of it
have you tried looking on ms website for the runtimes? maybe urs is corrupt and needs to be reinstalled, and what ver of windows are you on