wow - this is cool.  i've downloaded windows live photo gallery and the multi touch beta drivers for the dell xt tablet (one of only a few systems supporting windows 7 multitouch) and it's working great.  the warning about the pen not functioning was correct (i've effectively made the dell xt a touch only tablet) but being able to work with some of the things i saw demoed at pdc was cool.  i just completed reading the engineering 7 post over at http://blogs.msdn.com/e7 covering the changes in place for the upcoming release candidate and now i'm all set to test the multi touch enhancements!