thanks, let me clarify...
I now have the DSL modem connected to a Netgear router, with one line going out to an airport express. If the mac mini is connected by ethernet to the router, it works fine with "Using DHCP" and it gets an IP address of 192.168.0.13
If I put in a manual IP, should it be the same one as above or what?
I also just got off the phone with OWC support and the guy said I should switch my airport express to use a 13 digit ASCII password. I don't have access to the airport express currently, but does this even make sense? I got the hex equivalent for the password and entered it in the USB Wireless Utility and it seems to be connected to the network. Well, I guess it's worth a shot...