Hey rainbow. Sorry you are having comp issues again.
Just to add some more advise .........
My stepson just read what you have written. He says if he were you he would reinstall your windows XP. It's the easiest thing to do. You should have a reinstall disc come with your comp when you got it. He said you have probably picked up a virus. It could also be that you have very little ram. If that is the case then you could add more ram but he doesn't think that is the problem.
My stepson is a comp geek. He got the highest marks in his classes in school and sells games he makes if it makes you feel better about his advice. My son in law is a bigger one but he's too far away to ask.
Hope this makes at least a little bit of sense.