http://lifehacker.com/software/how-...gnal-with-a-homemade-wifi-extender-296367.php
use a different arial, when #Ive messed about with power settings before its knocked me or other people off dont understand why tbh, dont know if certain things could hack it I guess (maybe I changed a few other options as well)
Limit you ip range, personally Ive got 16 free addresses with 10 taken for peeps that are always at my flat and 6 for anyone that pops over every now and then that aren't static
Change your IP range to say 50-65 (make sure the peeps firewalls are all open to that range)
Static DHCP
Mac Filtering
check the frequency range (whos on different channels try and do this about your house / flat as your router wont pick up all of them) if there are some on 11 go to 7,6 or my favourite 1
Open DNS thats always a win!
QOS (i need to get round to that eventually)
Im also just broadcasting on g doesn't make much difference but either way ( i have had some issues with the psp and n95 not working on g so you might want to change it back to mixed)
setup port forwarding for your usual stuff, games and so on (you wont have to for a lot of things but its always worth a shot)
stick to wpa2 if you have some issues with some of the peeps laptops connecting use wpa/wpa2
change the ssid
if you want to be a tad more secure use hidden ssid but that can be more of an annoyance to you when mates come around
make sure upnp is enabled !!!!
you may want to consider dyndns for some things like remote connection streaming etc
and
flipping the internet upside down (for people that may break into your wireless network but dont have the correct mac)