Well I made a huge change in things . My OS is now 64 bit win7 and well I just do not know what to use to keep it clean . I used wash and go and widows washer in the past for vista 32 bit along with registry mechanic . ( Just got version 9 at the store for win7 64 bit , works great too . ) What do you use to clean , maintain and speed up your win7 64 bit OS ?