I had little or no trouble installing MSDN Microsoft Office Professional Edition 2003. However, running Excel would display a box requesting my name and initials, then immediately perform a Windows dump, quoting Code 0xc0000005.
It would then offer to restart Excel in "Safe Mode". Choosing that would get as far as accepting my initials and showing a blank grid of Excel cells. It would then hang, and die a few seconds after.
Same occured with Word 2003.
I have had good success with CrossOver Office 4.x and MS Office 2000. But Office 2003 and CrossOver just don't seem to be compatible. That's a big shame. I'll come back in a few months and try again I guess.
Thanks for trying, anyhow.