Question : Problem: No option for setting resolution for Wide screen external monitor

I got a TOSHIBA M400 Tablet PC which I am trying to connect to a DELL 2007 WFP Widescreen external Monitor. The monitor has a native resolution of 1680 X 1050. There is no option for this resolution in Display Setting. I have updated all the necessary drivers. Please advise a solution.
thanks
josh

Answer : Problem: No option for setting resolution for Wide screen external monitor

The monitor driver wasn't the problem. I have solved this now. The Bios wouldn't allow the appropriate resolutions to be displayed. I upgraded to BIOS version 3.20 from the Toshiba US site which worked. This version of BIOS is not availabel from Toshiba Europe sites, where the latest version is 2.10.
Thanks for trying to help Callandor.