FWIW: To accomodate tonights DST-TZ I upgraded my Linksys to DD-Wrts v23 SP3 which is
technically beta.
Along with the regular site survey that has been available in the past, is a very
graphical interesting one by Nate True called Wi-Viz http://devices.natetrue.com/wiviz/
It's an very interesting open source package available for broadcom chip'ed routers.