Here is how to get the Openmoko based Neo1973 up and running:
Get a root file system/kernel from:
http://buildhost.openmoko.org/snapshots/2007.08/images/
You will see plenty of kernels and rootfs images on the build servers - don't try any two random combinations - it won't work. The kernel/rootfs combination you get from the above link is OK.
Flash the kernel/rootfs:
http://wiki.openmoko.org/wiki/Flashing_openmoko
Erase the existing rootfs before you copy the new image.
The booting process is very slow - most of the time is spent in getting the UI up and running.
If the USB cable is plugged in, you will see a `usb0' interface coming up on the host PC. Assign an IP address of 192.168.0.200 to it. The phone has an IP of 192.168.0.202. You can now do ssh/scp.