Except, most people have now had the advice that they should change to either channel 1 or channel 11. I've just had to reconfigure the in-laws' wireless (literally 5 minutes ago) because the neighbours have just put up wireless adaptors on channels 1 and 11.
Best thing to do is get yourself netstumbler (from here:
http://www.netstumbler.com/downloads/ ) run it up and it will tell you what channels are in use within range of your computer - then just pick the one that's within as uncongested a band as you can manage.
As you can see, the channels overlap - try to choose a channel that doesn't overlap with those in use around you (or at least, one that doesn't overlap too much).
---------- Post added at 11:02 ---------- Previous post was at 11:01 ----------
In all honestly though, best bet is to get the device and then see how you get on. If you start to get problems post back here and someone should be able to help.
Most importantly though, you
must make sure that you secure the access point properly.