It you have a Table PC I strongly encourage you to download sp2 RC1 for windows XP. It actually installs the Tablet 2004 version of XP and I was actually able to write this post with it. I may actually use my Toshiba in Tablet mode again!  The floating handwriting entry boxes and visual cues for right clicking are improvements that make the tablet interface feel much more natural for applications that weren't built for Tablets.  And there are a lot of those.