ASUS released an SDK and Tutorials for EEE-PC and EEE Desktop as an Open Source Project.
Interestingly, the SDK's guide documentation refers not only to the Eee but also to the EP20, Asus' compact, Linux-running desktop widely seen as the anticipated desktop Eee, also known as the E-DT.
The SDK supports coding in the C and C++ languages, and the bundled guide takes novice coders through designing dialogs, writing code to underpin then and creating an icon to go with it. There's a reference for key API routines, and advice on packaging the completed app up for distribution.
The SDK is availble from SourceForge website.the Project is trying to form EEE-PC community and sponsored by ASUS as written in the project page on SourceForge.