There are many services which are running in the background when you use your Windows XP. Each of them have their own importance and relevance. But some services are not that useful for an average user. Therefore, if you disable those services, you can have their share of processor speed and RAM space. Services can be accessed by typing "services.msc" (without quotes) in the Run dialog box or by going to Start ->Control Panel -> Administrative Tools -> Services.
The following are few of the services you can consider disabling.
