another one.. being the desktop neat freak i am
dont you hate it when you change your resolution and then your icons get all messed up. well, download
http://www.pcnineoneone.com/tweaks/layout.zip , extract layout.dll to \Windows\System32 and double click on layout.reg. now arrange your desktop icons to your liking, right click on your recycling bin and click save desktop icon layout. so now if your icons get moved again, right click on recycling bin and restore desktop icon layout.
and another one i always do...
determine the irq of your System CMOS/Real Time Clock in device manager. now go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\PriorityControl in regedit. make a new dword IRQxPriority, x being the irq number of your System CMOS/Real Time Clock and set the value to 1. should give your system a boost!