I bought Microsoft office 2007 and I don't like it. How can I sell it and get 2003 version?

The reason I don't know how to sell it is because I already registered it with microsoft. I was hoping there was a way to unregister it so the new owner will still have 3 installs instead of only two. Hey, if anyone out there wants to buy it from me, I'll sell for $279

I bought Microsoft office 2007 and I don't like it. How can I sell it and get 2003 version?antivirus protection

I believe somewhere in the EULA, it says something about a full refund within a specified amount of time (perhaps 30 or 60 days) if you're unsatisfied. Why don't you give Microsoft a call and find out whether you can get a refund.