I'm not going to put the description here cause you should know what Office 2007 is.. So the Enterprise Edition includes everything (Good for you xD) and this is a legal version. Well now you're thinking how this is legal....right? I got this copy from my university's download site. This copy automatically generates a key and installs it without you having to waist your time.
Installation:
Step 1: Click run (batch file) and it will generate and put the key in the right place for you. Step 2: Follow the on screen instructions (click next 3-4 times and you'll get it on your pc)