I just bought a netbook off of craigslist for $70. All is working properly, however, the laptop does have windows XP SP3 (genuine) installed. Here is the Amazon page for specs. 1.6Ghz Atom Z530 (HT enabled) 1GB DDR2 (non-upgradable) Intel GMA 500 12" 1280x800 LCD 50GB HDD I have a couple copies of Vista ultimate and one copy of Win 7 pro. With it being a single core atom, would 7 really bog it down? All i am using the computer for is web browsing, word processing and NES/SNES emulation. Basically, as XP SP3 is fully updated and i have symantec AV, should I upgrade my OS or leave it be?