i found the source of my problems
1. the random files that are in the computer
2. the random programs that have been installing themselves
3. the svchost.exe troubles.
so if my anti-virus cleans it out, then i shouldn't have anymore problems.
i uninstalled some software (some that i don't need of course) including a utilities program that modified my settings. that could have been the start of it all.
i need to find a firewall software, though. :| and a pop-up blocker.