Wallpaper on Dual Monitors

[bradc]

I have two 23" ACD's non-mirrored. I have a 3200x1200 wallpaper that I want to spread across BOTH monitors. Right now I have the same background (1920x1200 it cut the image) on both monitors(not spread).

So how can I get the full 3200x1200? If possible...

 

[edesignuk]

Split the image in half (using photoshop or something).