I'm confused about which version of Windows XP home I would need to run under bootcamp. Reading the forums, everyone says just buy the OEM version like: http://www.newegg.com/Product/Product.aspx?Item=N82E16832116511 but one of the reviews on newegg says: "Cons: Be sure to read MICROSOFT's definition of "System Builder" before you order this software! If you are building a PC for your own use, you are not a "System Builder" and must return the software to your distributor. Unfortunately Newegg will not accept unopened OEM software and you are out the purchase price! Other Thoughts: Also you will need Microsoft's OPK (OEM Preinstallation Kit) to install the software. Unfortunately an OPK is only included in a 3-pack of Windows XP not in the individual package." but other reviews don't mention this at all. i'd hate to have to pay $180 for the full retail version. Can someone comment? thanks.