After a unreasonably long download time. I finially got the EeePC SDK from ASUS.
I installed the Xandros-OC Desktop to a VM created by VirtualBox with 4G disk space:
Kernel use 2.6.24, development tools includes gcc 4.1.2, eclipse 3.2 with Qt 4 plug-in..etc. Should have a complete development evnironment out of the box.
It also contain a 48 pages kick-start document "Xandro ASUS Software Development Kit" to teach the general procedures
The first step is to have a development environment for EeePC. See what can I do with this SDK in future ....