Common Wallpaper Resolutions:
(Click to Apply)
Auto-Detect
1024x600
1024x768
1152x864
1280x800
1280x1024
1366x768
1440x900
1680x1050
1920x1080
1920x1200
iPhone, Zune
PSP

Recommended options:
(Click to apply)
10 tiles wide
9 tiles wide
8 tiles wide
7 tiles wide
6 tiles wide
5 tiles wide