I installed 7 and it is working okay. But, I might need to go back to XP some time. I do have the recovery discs from Acer. This is for a Acer AOA150-1777 netbook. I do not have a external dvd/cd drive for it. Is there a way to get a clean install of XP Home OEM back on it? SP3 if it can happen? I do have a 4gb usb stick handy. Bios is slic 2.0 Or is it better to just cough up $50 for a usb external dvd/cd drive and install it using the recovery discs from Acer? I hate all the extra crap that comes with it though. I would much prefer a clean install if possible.