MSCONFIG is the Windows XP utility that if you use it you tend to use it a lot. The program has been the same since the XP launch and adds many diagnostic tools that can be used for troubleshooting a problem XP installation. One of the most useful tools it provides is the startup process utility that lets you turn off those unwanted processes that slow boot time.
Microsoft has quietly released an update called the Configuration Utility Update that adds a TOOLS tab that is a launcher for a bunch of system utilities, providing one click access for things like the Task Manager, Internet Explorer Options and System Restore, among others. It’s a great addition to the XP toolkit and makes maintaining your installation just a little bit easier.