Making my router into an access point for my modem/router

I finally realized that my modem has been causing problems for me for a long time. When trying to host stuff on my Xbxo 360 I would always get a strict NAT setting, but I realized it was because of my modem.

People told me I was double NAT'ing. No matter how much I tried with the DMZ+Port Fowarding on my Linksys WRT54G router, it wouldn't go through the modem because of that double NAT'ing.

On another forum it was suggested to me that I should try to make my linksys router into an access point for my modem. The trouble is, I'm nervous about trying any suggestions because they don't seem very specific.

Here is my current setup: DSL ->modem (Alltel/Windstream Siemens Speedstream 4200) ->into a Linksys WRT54G v4 then into 3 computers+1 Xbox 360.

One other person suggested that I should bridge the two connections, but I would just like to know which is more feasible for me to attempt today or tomorrow to get rid of this double NAT'ing. I am leaning more towards the side of using that Linksys as an access point, but other than that, I really have no clue where to go.

Finally, one person suggested just hooking up one computer directly to the modem so I could access my modem's configuration page (the person guessed it would be 192.168.254.254).

Thanks, if you need any more info, just ask!

 

Disable DHCP on the router
Give the router(now an AP) a static Ip Address within the scope of the modem/roter

That's it.

 

Sorry for the thread-jacking, but I think this better explains the problems that I am having... When the Linksys router has DHCP turned off, is it still connected to the DSL modem via it's UPLINK port, or should one of the 4 LAN ports be used?

 

Connect thru one for the 4 switch side ports, because that's what it is now, a wireless switch or Access Point.

 

Connecting two SOHO broadband routers together.

Configure the IP address of the secondary router to be in the same subnet as the primary router, but out of the range of the DHCP server in the primary router. For instance DHCP server addresses 192.168.0.2 through 192.168.0.100, I'd assign the secondary router 192.168.0.254 as it's IP address.

Disable the DHCP server in the secondary router.

Setup the wireless section just the way you would if it was the primary router.

Connect from the primary router's LAN port to one of the LAN ports on the secondary router. If there is no uplink port and neither of the routers have auto-sensing ports, use a cross-over cable. Leave the WAN port unconnected!