also..... are you really planning on buying a bran new copy of windows 7? Dont you have an old machine around that you can pull a CoA from, or check for a used copy on craigslist (being against piracy is understandable.... but buying a bran new copy is a bit of a waste)
I dont know what "Bran" is, do you mean Bran Flakes, the cereal?
You cannot take a copy from a old PC, the code is locked to the MOBO. Unless you use (Program Name Removed)
to fake the codes, i would not try it. ISO files can be downloaded legally and are good for 30 days, but after that it shuts off.