Woweee it's here! If you want to play with the next version of Office and aren't afraid of Beta software then:
1. Click the link below
2. Jump through a bunch of Microsoft marketing hoops
3. Download the smart source software
4. Wait half a day for the
bits to download to your machine
5. Install.
6. Add a dash of pepper, and presto one fully baked Office 2007 installation.
http://www.microsoft.com/office/preview/beta/getthebeta.mspx