If your interested in trying the new system Microsoft has open the download period to 1/24/09. You need a live account or hotmail account to download. Also you need to use IE, FF didn't let me do it. At the time you download you will get a key. On this link is a "Try the Beta" click on that and follow the instructions. A word to the wise do a clean install. I partitioned my C drive and installed it there. Unless you have 4GB+ of ram I would recommend getting the 32bit version over the 64bit.
http://www.microsoft.com/windows/windows-7/default.aspx
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