I just bought a Dell Dimension, dual cpu @ 2.13 ghz, 2 gb of ram. I had a guy strip the hard drive of all unnecessary programs. It's faster than anything I've ever used. Almost every computer I've used recently has been infected with pop-up generating spyware. My last pc died when I clicked on a googled site that claimed to be reviews of a broker. On this new computer, I am not visiting any web sites that are not very well-known URLs. No myspace, porn, or file-sharing. I am also not installing any software that I don't have to have. What else can I do to keep my machine clean and fast?