hi,i have hp pavilion 522n. 256mb memory, 60 gb, 1.8GH... its a pretty old computer. i just reinstalled windows xp pro on it. after using it for a few days, i found that its slow when i start to open big programs. for example, if i open a big download program or a game, then every thing else will get slowed. problems like computer freezing or the thing i clicked will come out after 5 minutes. i used emule program and it gets slow. can ne 1 help me? do i need to reinstall the windows or get new hardware? memory card,proccesor,or mother board any thing like that?