Hey everyone! I bought A used Mac Mini i5 2.5ghz during a Cowboom fire sale. On my invoice it is stated thatno OS installed. I'm assuming the hard drive was wiped clean. I've heard that I install Lion through the Internet. Can anyone explain how this process works? Do I just plug in a keyboard and hold down control + R? I have a wireless Logitech keyboard that uses a USB receiver. Should it still work? Also one small question- do yous recommend me upgrading the ram to 8gb? I'm going to be basically using this for college applications, games like Starcraft! iTunes, browsing, etc.