Hello ozzzimmer,
Everyone is correct here. You may be able to install, but will not be able to activate and as a result Windows will be deemed non-genuine. It is illegal to do this. Windows 7 comes with one license meaning it can be installed on one computer only. If you wish to install Windows on multiple computers (as upgrades), I recommend the Windows 7 Family Pack that will allow you to install Windows on 3 computers.
Cheers,
Cassandra
Microsoft Windows Outreach