Try some of the parabolic reflector ideas at www.freeantennas.com. If you have one of the access point models that has two antennas, you might even be able mount a reflector on each, pointed in the two different directions you need coverage. Perhaps some scrap cardboard and foil will do everything you need?
I originally posted this in the wrong forum - sorry all.
Is it possible to have more than one 802.11g range extender on a wireless network. For example, my main (wired) desktop is in my home office at one end of the house and the laptop is used in the other end (about 70 feet away). I am considering a range extender to boost the signal available for the laptop, which is not the question posed here.
I also have an outside shop (dog-house to some) which is another 80 - 90 feet (total of about 160 feet or so) away from to broadband modem and I'd like to be able to use my laptop there, also. Can I add a second range extender (i.e., laptop, range extender, range extender, wired computer)?