I have tried winpe 2.1 and 3.0.
I used the following to connect to network win2008 src
net use f: \\192.168.1.1\win2008
very often, the installation dialog box could not be started up unless setup.exe was run many many times. the filesize for setup.exe is very small (111k). i have been waiting for more than 10 minutes but no luck anyway.