i am trying to make my xp computer run faster when i go on system config there are loads and loads of programmes that i dont know what they are
This is a very good question.
Yes, the less entries there, the better. Your computer will start faster, and then, while in Windows will respond faster, if you have less applications running in a background.
Unchecking entries in "msconfig/startup tab" DON'T uninstall programs. It only prevents them from running at the startup.
You have to be carefull, though, because, if you uncheck some crucial startup, your computer may not work properly.
You won't damage anything, since none of crucial system startups are there, but you have to know what you are doing.
If you wish, you can install "Autoruns" (
http://www.microsoft.com/technet/sysinternals/Utilities/AutoRuns.mspx), click on "Logon" tab there, and post a screenshot of it.
I'll help you with telling, which program you need as a startup, which you don't.