Ever wondered that question? Even more so, ever wondered if the wallpaper you've laboured on will actually fit your N900's screen and widgets/shortcuts?
Why not try it out!

I've made a little PNG image, with objects layered, so that those who have the programs able to edit images can, if you so choose, use to create your new wallpaper with. The image is the correct N900 wallpaper size, and was taken from a screenshot of my own N900. I've stripped it down to just the task bar, and added in real-sized images of a shortcut, and a couple widgets, so you can have a go at making a wallpaper that you now KNOW will fit your desktop with style!

http://www.wanderingeccentric.com/n900/n900_background_checker.png - N900 Wallpaper Checker (.png, 114kb)

If you have any questions or the like, do let me know!