Does anyone know a good site to get these? 1680x1050 resolution, i tried deviantart but i cant sort the widescreen section by size..

This site has about 70 pages of free 1680x1050 wallpapers
Interfacelift.com

These onez have alot of widescreen but not all of them are 1680x1050
Wallpaperstock
Aguntherphotography

Here's a deviantart search for "1680x1050 wallpapers" and it came back with alot of results
Deviant Art

I use 1440x900 on the same size widescreen as you, so i have it easy, but i use skins.be