For a howto see section 15.9 here
http://lartc.org/lartc.html#AEN1099
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The dd-wrt standard release has seen stable for a couple years however the project is still very active including new routers.
Please consider before you buy - at this point in history you really want 802.11n and there are already routers out for very new 802.11AC (up to 500mbit) . You MAY want to delay that purchase a couple months if you can.
http://en.wikipedia.org/wiki/IEEE_802.11ac
The other issue - you probably want a router to support IPv6 at this point. The standard dd-wrt is based on a 2.4 kernel and does not support IP6v w/o addin tools and utils a a 'special'. There is a dd-wrt variant that supports IPv6 and is base on a 2.6 kernel,but IIRC it cant run on many legacy routers (insufficient dram).
http://www.dd-wrt.com/phpBB2/
Here is the router database - enter asus or cisco or ... and hit return.
http://www.dd-wrt.com/site/support/router-database
I haven't surveyed soho routers in a while but both Asus and Linkssy-Cico are making some nice *looking* its, bti do our homework.
Just to add complexity, I'd be investigating other router firmware too, like OpenWRT.
https://www.openwrt.org/
http://wiki.openwrt.org/toh/start
The TomatoUSB project also get a LOT of good press,
http://tomatousb.org/
But also ....
http://en.wikipedia.org/wiki/List_of...mware_projects
This place does a nice job reviewing routers, but ... likely w/ mfgr firmware unless otherwise noted.
http://www.smallnetbuilder.com/lanwa...er-charts/view
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