Hello, I have a question, i bought the Microsoft Windows XP Home With SP2B for System Builders 1 Pack two years ago, Newegg.com - Microsoft Windows XP Home With SP2B for System Builders 1 Pack - Operating Systems and now my HDD is giving me trouble and I have brand new HDD laying around and was wondering if I could install the same windows that was on the old HDD into the new HDD? Or do I have to buy a brand new Windows for the new HDD. I'm still using the same desktop(same motherboard, etc..)