A few years ago we had a little application that offered 1 click optimisation. It defragmented the HDD, RAM, performed other disk tools, deleted unusued/dead files etc. Since then I got a PowerBook and forgot all about it. But my XP side is getting a little slow now and I'm trying to find another good optimisation program, any recommendations? Ideally it needs to be a single click or schedule based all-in-one fix up.