In Windows Tweaks

• Search
• Remember Folder View
• Messenger off
• Tooltips off
• Performance
• Registry hacks
• Disable XP auto update
• Slimming XP
• Disable Indexing
• Disable startup programs
• Change drive letters
• Keyboard shortcuts
• Services
• Speed up NTFS
• Speed up Outlook
• Tweak the Prefetch
• Slow network browsing
• Notification ballons off
• Remove Shared Folder
• Move Startup Folder
• Menu Show Delay
• Animated Windows

Messenger off

To stop MSN Messenger from loading automatically upon every WinXP startup:

• click the Start button
• click Run...
• type msconfig 
• click OK or hit Enter
• click Startup tab
• remove the check mark next to Windows Messenger
• close Msconfig
• restart Windows.

Note that this way Messenger still loads when called upon by other apps like Outlook, Outlook Express or Hotmail (MSN) web access.

To permanently disable MSN Messenger when using Outlook (Express) or Hotmail web site, simply rename the C:\Program Files\Messenger folder to Messenger-OFF! (example).
This will effectively shut down Messenger, but not interfere with the loading of Outlook.

To uninstall Windows messenger completely, - good for if you use MSN LIVE Messenger, go to the run command on your start menu and paste this into it:

RunDll32 advpack.dll,LaunchINFSection %windir%\INF\msmsgs.inf,BLC.Remove