Dave,
Wow. Been a while since I've posted in this thread
All I can tell you is that it does work. Though running things after resume sometimes is finicky with windows calling programs within programs etc. For devcon functions though it should certainly work. Have you tried putting the commands you want into a batch file and calling that? Also put something in the batch file to echo the date to another file so you can see if it is actually running on resume. I'd switch of the password request on resume just to be sure that isn't a factor.
Cheers,
Arkay.