With the default Category Control Panel:
If you like, you can also do: Start --> All Programs --> Accessories --> Run --> type in services.msc --> Select OK.
After configuring all services that you desire to change, reboot to see the effects of your tweaking.
Note: Do not use msconfig to stop services. It basically is "disabling" a service. Use the above procedure and set to "manual" instead for testing purposes.
Welcome Guest!
"Have you tweaked your OS lately?"
Choose the look:
Windows Service Configurations!
Includes explanations of each service and advice on which services you can safely disable.