The default Windows XP installation contains a number of unnecessary services that are started by default. Extra running services consume CPU cycles and memory. To free up system resources and tune your operating system for optimum performance, you can stop and disable the services. The list (below) details those that may be unnecessary:

NOTE: I recommend disabling one at a time. If you notice problems in your programs, then undo what you have done.

* Alerter: Notifies selected users and computers of administrative alerts.
* Application Layer Gateway Services: Provides support for 3rd party protocol plugins for Internet Connection Sharing and the Internet Connection Firewall.
* Application Management: Provides software installation services such as Assign, Publish, and Remove. (more…)

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