my sister has a desktop pc,intel 2.0 ghz celeron, intel graphics, 384mb of ram, 37gigs. she bought it abou 2 1/2 years ago. the computer has gottem really slow, it takes her sometimes about 5 minutes to open "my documents". what can she do to speed it up. we took out all spyware and adware and also all viruses but its still slow. she does not have the money to buy a new one cause she is still in highschool. she gets like $100 each month from our dad. what can she buy for $100 or less to help her computer?