Filed squarely in the “because you can” category of netbook software is a little Windows utility called EeeRotate that can rotate your Eee PC screen. Sure, you could use the Intel Driver application to rotate your screen by 90, 180, or 270 degrees. But there’s one problem with the Intel software: it doesn’t change the orientation of your touchpad. EeeRotate does.
The program also lets you rotate your screen with a handful of keyboard shortcuts. Ctrl+Alt+Right will rotate your screen by 90 degrees. Ctrl+Alt+Down will give you a 180 degree rotation (turning the screen upside down), and Ctrl+Alt+Left rotates your screen by 270 degrees.
When you want to go back to normal, you just hit Ctrl+Alt+Up.