If you don't have the time, CPU Cycles, Disk Space, or secret combination to get into the Beta program, you can still test drive Office 2007 without having to install it. You can navigate to http://www.microsoft.com/office/preview/beta/testdrive.mspx?showIntro=n and with a few mouse clicks be working with Office 2007 in a hosted environment. While Microsoft doesn't offer support for the product you can jump on the newsgroup and provide feedback.