seeing that your affiliate marketer spend 1.5-2.5k on a setup should be well worth it I'm sure your at your computer 10 + plus hours a day i would never skimp on purchasing a PC go for it do it right and you want have to be frustrated with slow speeds and aggravating issues, also just reformat you wont find computer that don't have vista on them in stores
check out
www.powercyberpc.com
look to spend at lease 1.5k on one
whats 1.5k when it's really the only over head you have, a store front would cost 1000s a month luck for us we just need a internet connect and a computer