|Touchy, touchy. |
Personally, I've been VERY happy with Iolo System Mechanic. It keeps my registry spiffy, and does all those other little tasks MUCH better than Windoze stuff does. It also regularly backs up the registry, allowing you to recover quickly and easily from those annoying .dll glitches that occasionally prevent Windoze from booting up. It's pretty cheap, and they allow you to install and update up to three PCs.