So I been useing office 2003 for four years now. So i figure I would get office 2007. (I got it first day cost $400). So i uninstall 2003 and install 2007. The thing i don't like about office 2007 is you have to learn everything again. which i do not have time to do so. I was so freaking pissed when i wanted to fix something but i couldn't find where it is!!! So if you think upgraded one is worth $400 go for it. But i can promise you, you're not missing much from 2003 expect you have to learn the whole thing again!!!! I think they made office 2003 better than 07. I hope the SP1 comes out so the bugs can be fixed.