Both of you should have legitimate product keys when you purchased your copy of Windows 7.
Why are you asking for help on product keys? WE DO NOT supply them, nor do we condone anything illegal regarding the installations of Windows 7.
IF you're asking for product keys, then we must assume on this end that your trying to bypass Windows 7 GENUINE installs.
You need to buy legitimate keys if you don't presently have them.
I am closing this thread because of this.