essentially for wireless to wireless bridging modes your extending the range, and you loose 1/2 your bandwidth.
forget about all the bridging PR advertising blerb, your after simple
WDS mode (aka PR bridging) for ANY wireless router, basicly you put the second units MAC address into the first units WDS settings and the first units into the second so they can talk to each other on the same channel, and you disable one of the units DHCPd servers and match the router2 to the CM<>router1's LAN IP subnet 192.168.0.* or whatever and your away....
but i always advise you make it easyer for yourself long term by making that little extra effort and find a way of running that single ethernet cable to connect both (or more) wireless routers together instead.
as you dont then loose that precious router processing power doing everything over wireless and yet you still get your max data thoughput through the router to router rj45 wire rather than lossing 1/2 your available wireless bandwidth just talking to each other.
use the wireless section for that its best for, connecting all your diverse wireless devices, and push as much data off each onto the single ethernet wire while increasing your range....
do a search on generic
WDS modes rather than bridging and you will find a lot more usable info.
---------- Post added at 16:36 ---------- Previous post was at 16:27 ----------
sure, as iv said and posted here before, make such a thing as the wind surfer and put it on your wireless routers arials, boosting your db by 3 in effect doubles the distance for a given signal strenth outdoors and slightly less if your indoors and getting/going through thick walls etc, foil back underlay is the real killer of wireless signals, so make sure your carpets etc dont have that as the signals are reflected back, hence a wired ethernet between floors and wireless routers is the better option anyway.
simple easy and quick when you point them to reflect in the direction of your devices/PCs etc.
http://revision3.com/systm/surfer
http://www.usbwifi.orconhosting.net.nz/