WDS over Linksys WRT54G to WRT54G

Hello, I just moved and am having trouble with getting proper connection through my house. I have to Linksys routers but only one Modem, so I decided perhaps I should connect the Linksys Routers over WDS. The problem? I have no idea how to do it. Could someone please write a small tutorial, and is it true I have to install new firmware? If so on which router should I install it on.

Thanks!

I wouldn't know about the firmware part, consult the manufacturer website. That is likely not the case, but check for updates anyway. You can extend your network but both signals must have the same SSID and be set to any channels except for 1,6, and 11.