BleepingComputer.com: VPN Ok, Can't Access Shared Folders

VPN Client is WinXP SP3 fully updated.
VPN Host is 2003 SBS also up to date.

I had a VPN connection set up for a remote accountant for about one year with no problems.

The VPN connection still works, but the shared folders are no longer visible or able to be accessed.

No changes have been made to the client or the server, except for the fact that the client PC have moved to a different physical address.

My first instinct was just to remap the network drives, but i cant access the shares with "\\server\share" nor with "\\xxx.xxx.x.x\share"

I have also attempted to establish a VPN connection from my own home, just as a test, using the same settings with no luck.

The strange part is that it used to work fine, up to about one month ago (according to my client).

I have also tried to disable my firewall before connecting, that didn't work either.

I have used other user credentials as well and have determined the problem is not just isolated to one user.

I have scoured the server for any broken services or configurations, I even rebooted, everything is as it is supposed to be.

What am I forgetting?

I would appreciate any suggestions.