Oddly enough, I set up these same scripts last night for our DS and my programming lappy.
Only annoying bit is that it seems windows 7 won't allow you to force running as administrator on them. Did you find any way around this (because right clicking and clicking run as admin is so terribly difficult

)
Edit: Also, I thought the FRC subnet was typically 255.0.0.0 rather than 255.255.255.0 , was this intentional. Also as a note, I added set for "Local Area Connection" as well to a second IP, that way you can hop back and forth on wired at the same time