NEWBIE NEEDING HELP

Ok lets start this from the start friend has a windows 7 ultimate 64 bit machine he brought it here for me to fix what i did was install more ram and formatted the hard drive . I tryed to reinstall his windows only to find out it was counterfeit so to bypass and get a few newer updates ( he wants to run old stuff thats why its 7 ) i found wsusoffline for him . Got the exe and installed it on mine ( windows 8.1 ) got the updated secutiry files only dont know where to put them ? ( where do i put them ) also will this help him ? all drivers are still in it i didnt have to readd them i want him to be able to add any app he has at home for it . PLEASE HELP as im lost on what to do next for him other then giving up myself and if i do it will never see use again im sure 
