Yes, static route is the same as static ip. At the moment I think you are probably using DHCP which means that the modem may be conflicting with the router which is looking after handing out ip addresses. The following thread from a different forum deals with a similar problem you are experiencing:- How to hook up Singnet Aztech DSL 1000ER Router modem into Wireless router - www.hardwarezone.com.sg.
More info on getting into WAN bridge mode have a look here:- http://forums.whirlpool.net.au/forum...s.cfm?t=933517