Useful External Resources

Start up and Startup Managers

Managing the Programs That Run When Windows Starts Up
How to manage Windows Startup?

About MSConfig

How to troubleshoot by using the System Configuration utility in Windows XP
How to use MSCONFIG by Netsquirrel
MSConfig at Gord's page

Other

A Faster, Better Behaved Windows XP
Tweaking Windows XP from Yahoo! News
Disabling Messenger Service in Windows XP