Originally posted here by mnchur
before you go and spend the money on something new or go and switch your whole nework around determine what the true problem is you can look at your signal strenght and such with the program netstumbler its pretty easy to use and its free to boot
I agree check signal strengths and think about possibly moving your WAP to a location where you don't need to go through so much interference. You can also get a directional antenna and point it to the general location of where you need it. Directional antennas definitely boost the signal strength. I have seen one outdoors increase the signal by about a mile but that is high end you can get one for pretty cheap and still boost your strength.