Ok, there it goes... I have a Wired LAN, it uses a ISA server computer to share internet, this machine is a stand alone server (no domain), serves IP address to client computers (DHCP Server) and resolves names to IP address (DNS Server). Now I want to add some wireless clients to the lan, but i want those wireless clients to access internet via the ISA Server. I tried to connect them with a WRT54GL (Linksys firmware) pluged to the LAN Switch, configured some stuff and they can surf the web but they cant use IRC among other stuff. Of course, the WRT54GL is not a proxy client or firewall client so it seems that it is working in SecureNAT mode to the ISA Server. Can anyone help me, what should I do to get this thing working??