No experience with the beta...can't help.
Comment about 2007 - good programs but they changed the interface so much that it's a PITA to learn. I'm there, but it took some time.
I reset the default save in Word to use 2003 formt, as many people don't have 2007 yet and the reader patch you can download from MS doesn't always work. however, I learned that when you do the same in Powerpoint (save a 2007 file in 2003 format) it makes a much larger file. that may not be a problem, but I thought I'd mention it.