I just set up my Airport for wireless access across my home, and I have the airport's WAN access hooked into one of my Macsence routers lan ports for extra security. My, iMac, still connected to one of the Macsence's lan ports, needs to file share to my G4, which is located on a wireless connection behind my airport. What do I need to do in order to let these 2 computers see each other to share files? Furhter what port do they share on, NFS? Not using apple share...

***Note to moderator: I did not see a networking / airport forum to subject under today... move if needed... thanks.