Routers / Switches :: Transfer WAN From Radio Receiver Through Chain Of Routers

For my work I am looking to create wireless capabilities to remote locations. To do this we are using a standard modem/router that is connected to an Engenius (802.11b/g) wireless outdoor radio connected to a dish antenna. We are able to go to locations (3+km) and then with a corresponding receiving antenna (using LoS), receive the Internet and connect both to computers at the transmitting point as well as to the WWW. The problem exists is that we want to employ a series of routers at the receiving end that would be able to carry the transmission to a different location (relatively close), due to the fact that some of the locations do not have line of sight to the antennas. We are using Encore routers, model # ENHWI-N3. When we connect the radio's Ethernet into the routers WAN reciever, we can connect to the Internet with a computer. The problem exists is we want to pass that connection over to a second router (R2). This connection is done when the routers are on access points set to a WDS function with R1 having R2's mac address and vice versa. Both routers are set to channel 1. Even when the routers are seperated by distances >50m a computer plugged into R2 can see a computer plugged into R1. Files can be transferred between the 2 computers wirelessly at speed around 3 mbps. However computer 2 on R2 can not connect to the WWW. This router features a spot that lights up if it has Internet access and R1's is lit up but R2's is not. How do we transfer the Internet and not just a LAN from R1 to R2 so it can be accessed further away from the point of the radio and antenna equipment. This setup has also been used where R2 is hardwired to R3. At R3 we change the channel to 11, and then connect through that with mac addresses wirelessly to 4th router. If comp is in R4 and far away it can still access and file share from comp at R1.*edit the ip address for the routers exist all on 192.168.1.xxx If the 3rd number is different between routers would this make a difference?