I have a copy of Windows XP that came with my Dell computer (whoa! dont jump to conclusions that this is the same old question ). I used it to install windows in boot camp to see if I like it during the 30 day window before activation. I am now searching for the most cost effective solution for getting an activation code. I was set on newegg.com for an OEM XP SP2 copy for about $89 when I came across an Office Depot deal for $30 after rebate or maybe $10 if I can use a coupon as well. This question that I have is this: The Office Depot version is the Upgrade version not the full version. Now, since I am really only in need of an activation code, will this cheaper option work for me?