If one can install ROS from an USB cd/dvd drive, it would be possible to install ROS onto the Asus EEE PC. I have an Asus EEE PC and the manuel shows how to install WinXP onto it using a cd/dvd drive (one must buy or have WinXP on a cd/dvd to install it but the drivers for EEE PC comes on a disc that comes with the computer).
I am still having fun with the Asus EEE PC. Perhaps one day in the future, I will try installing ReactOS onto it.
There is another part of the forum that discusses the Asus EEE PC.