Fullscreen mode with SoftTH from our here kegetys - 2.08b: http://www.kegetys.net/forum/index.php?topic=2123.0

Change the resolution in the skyrim file to 5160x1600. Then for SoftTH this is my config: http://dl.dropbox.com/u/29331868/config.SoftTHconfig

Extra res I added for bezels that's why it's 5160. You might need to switch left and right ID around depending which is which, you'll know if left is opposite in game.

Haydens fixer to center the menu here: http://widescreengamingforum.com/dr/elder-scrolls-v-skyrim/en
Untick auto-detect, and set GUI width to 2560 then it's perfect.