The configuration tool does now offer widescreen resolutions at 16:9 ratios, but to get 16:10 or other ratios, you have to edit the "display width" and "display height" values in the "config.div" file located in Divine Divinity's installation directory.

My resolution of 1920 x 1200 requires the following modification:

// display width
width 1920

// display height
height 1200

The good news is that the full map now works in widescreen resolutions!

[Linked Image]