This is the situation: right now i have one server running SBS2000 (Exchange + ISA Server) with 2 ethernet cards. One i connected to DSL Modem. The other is connected to a switch were other 10 pcs are connected. The server is a domain controller. All i want to do is replace the ethernet switch and ethernet cards on the client computers with wireless cards and a WRT54G router to act as a "wireless switch". Is this posible? If it's not...how should i configure the router and the server to allow clients to access internet and SMTP through exchange server?? Thanks for your help.