If you want to try the Chrome OS, you go here to download. (Chrome OS VMware image or VirtualBox image)!
Here is some tricks.
1)Change the network setting to NAT.
2)Login: chronos , Password:
Then you will see the a "chrome browser". In fact, there is nothing to play and I have some comments after testing.
1. The running speed of the OS is not that fast. I don't know whether it is related to the VM image or not.
2. The image will hang after some while.
Hopefully, it will be better after the real product on Netbook.