No Dice, Not kosher. It's supposed to be 1 copy per computer. Unless it's a Family Pack, but this is only available for the home version.
The EULA states the following:
The Windows 7 desktop operating system software is licensed on a per copy per computer basis for consumers. In this context, a computer is a physical hardware system with an internal storage device capable of running the software. A hardware partition or blade is considered to be a separate computer. Users may install one copy of the software on one computer. That computer is the “licensed computer”. Users may use the software on up to two processors on the licensed computer at one time.
If users are considered a “Qualified Family Pack User”, they may install one copy of the software marked as “Family Pack” on three computers in their household for use by people who reside there. The software bought may include more than one version, such as 32-bit and 64-bit. Users may install and use only one version at one time.