Setting up a wireless repeater?

I'm currently running DSL through Embarq. My connection runs through a phone line, into the outdated DSL modem, and then the ethernet on the back of the modem is connected to the Internet port on the back of a Netgear wpn824v2. I have an Ethernet Wall-Plugged Bridge connected to the first LAN port, my desktop to the second, and my Xbox 360 to the third. Following the Bridge, it goes upstairs and on the other side of the house. From there it plugs into the wall, and the Cat5 runs up to a WNDR3300. From that I have a Cat5e running to my other Xbox 360 upstairs, and a second Cat5 sitting out of the second port in case I need to connect my laptop to it to change settings on the router. What I am trying to do is extend the range of the Wireless G network from the WPN824v2 upstairs using the WNDR3300, and because the 3300 is Dual-Band, it will also broadcast N as well for just the upstairs or however the range reaches. I've tried using the Wireless Repeating Mode on the WNDR3300 but it doesn't do anything except render the router useless until I reset it from the back with a paperclip. Can anybody help me as to how to properly set up my wireless network, or if I have the proper equipment? Any help is greatly appreciated.