So I got the 64bit Win 7 Pro disc from the Ultimate steal for cheap enough... but I found out that some stuff that I want to run (games mostly... since that is the only reason I keep Windows around...) did not do too well on the 64bit OS. So I have borrowed my friend's install disc, but it turns out that his is only Home Premium rather than Pro which I have a serial for.
Can I still just run through the Home Premium install and use my Pro serial number (seems like I should be able to with the whole 'any time upgrade' deal)? Or do I have to go and find a 32bit pro disc to do the install? Are there any hoops that I have to jump through?