From Upgrade to Student to other. The EULA is online for you to read but it's still ONE USER and not number of computers. It would be a violation of the EULA to install it on more than one machine and allow two users.
Maybe you should look at Open Office which is free and works with .doc and more files, interchanges with Office? It's over at http://www.openoffice.org
Bob
I'm considering upgrading Microsoft Office 2003 to 2007 edition. Does the 2007 editon still allow installation on 3 computer?

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic