Hmmmm, strange. I installed Office 2003 on my 32 bit version and all went flawlessly. Updates from the original CD even self-installed. I am having a fair number of other applications that will not install, tho. HP C7280 printer driver, Nero 7 Essentials, Trend Micro House Call, Broderbund Turbo Floorplan Home and Interior, and others will not install. (I am using the public beta - build 7000.0)
I was able to connect to Windows Home Server and update without problem. A problem I initially had accessing my files saved on WHS seems to have corrected itself - perhaps after a reboot (???). I find it amusing that WHS recognizes the operating system as Vista Ultimate.