hmm.. kabuteman.. can you give me some advices to speed up my PC in a safer way?? hmmm.. Im doing the basic ways.. fixing registry error, cleaning up temporary files,scanning viruses and spywares.. optimizing settings, defragmenting, turning off unnecesary softwares at startup ex window blinds... bla-bla-bla... Is this enough?? heres my system info: pentium 4[R] 1.7Ghz Maxtor(Hard drive) 40G RAM 256M ECS motherboard.. Geforce2 MX/MX 400 Can you recommend me other devices that will speed up my PC but in a lower price?? and last one, can I install windows vista into my computer even though my RAM is only 256m?? The recommended RAM size is 1G?? nweiz thx dude... sorry bout too much questions