My current set up involves my 13" MacBook Pro (1280x800 res screen) hooked up to my external 1920x1080 24" monitor. I love using desktop wallpapers, but am trying to figure out a unified resolution that would match both screen resolutions since I frequently unhook my MacBook Pro and use it without the main monitor attached. I also dual-boot with Windows 7 so I have a shared partition that I have the wallpapers in. I thought I could disconnect the MacBook Pro and have a separate wallpaper for it in OS X; however, since I use it with the lid closed, when I did that, the wallpaper I had on my main monitor was used on my MacBook Pro's screen. For those of you who have a similar set up, what resolution wallpaper do you use that works without adjustment on both 1080p and 1280x800 resolutions? 1900x1200? I get a lot of my wallpapers from wallbase.net so there are a lot of resolutions on there for example. Thanks!