Well, I really screwed up and lost my entire post. So, I will abbreviate here.
I haven't used ISA 4.0 since I have only standard. Were you using two NIC cards or three with ISA? How many are you using now and what firewall are you using? I am going to try and set up RWW with my friend's PC which is running Premium edition, but I will just have to guess a bit as I have never opened ports or set rules on ISA.