Meh, that's pretty much the reaction of everyone in computer support (me included) when we were switched to Office 2007. I don't care how much you know about computers, when everything you've been used to doing for many years is suddenly moved, it rocks your world for a bit. Then you get used to it.
EDIT: BTW, the interactive guides found
here have been a huge help for my users. I send them out whenever we upgrade an department to Office 2007.