users cant logon to e2k7 after removing e2k3

Hello all

I have finally been able to move all of users to e2k7 (small network) and
remove the e2k3 server completely. Everyone, but me use Outlook 2003 (I use
Outlook 2007). No one but me can get their Outlooks to login to Exchange.
They keep getting "The action could not be completed. The name could not be
matched to a name in the address list"

Strange thing is that, they can all login to OWA just fine. I have noticed
that in OWA, if youclick on "To" when sending a new message that the Global
Address List is empty. In my Outlook 2007, this is not the case. I see
everyone there.

I have created another address list which works fine, I have tried to update
OAB, setup a new profile, check for DNS, everything looks fine. Nothing
noticeable in the eventlogs.

I have absolutely no idea what to do now. Any ideas would be greatly
appreiated.