XP Registry Hacks:

Auto Sort Start Menu HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\ Explorer\MenuOrderGo to Edit/Permissions, click Advanced, clear the "Inherit From Parent" check box, click Copy from the dialog box, click OK and then clear the "Full Control" for your account and now Windows will autp sort the start menu, but you can still do it too

Disable User Tracking HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\ ExplorerAdd or Edit DWORD = NoInstrumentation, Value = 1Disables Windows user tracking; better performance, much better privacy

Cache Thumbnails HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\ AdvancedAdd or Edit DWORD = DisableThumbnailCache, Value = 1Disables thumbnails in Windows, saving hard drive space

Kill Chrashed Apps Quicker
HKEY_CURRENT_USER\Control Panel\DesktopAdd or Edit Sring = HungAppTimeout, Value = 1000-5000Cuts time for Windows to recongize a crashed application and allow you to kill it; default is 5000(for 5 seconds)

Faster Start Menu
HKEY_CURRENT_USER\Control Panel\DesktopAdd or Edit Sring = MenuShowDelay, Value = 0 - 400Changes the delay that for Windows to show a menu in the start menu; value is in ms

Network Intelligently HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\ParametersAdd or Edit String = DisableTaskOffload, Value = 1Frees processor from doing network-card work

Browse the Network Faster HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\ RemoteComputer\NameSpaceDelete subkeys {2227A280-3AEA-1069-A2DE-08002B30309D} and {D6277990-4C6A-11CF-8D87-00AA0060F5BF}Speeds up network browsing of old Windows machines on the LAN by ignoring their scheduled tasks and printers

Remove Compression Option In Disk Cleanup HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\ VolumeCaches\Compress old filesDelete the Default Value Key and the next time you start Disk Cleanup, it will skip the compression analyisis