To acurasd re:
You had to do it one time or another since there is wireless security on it right now because by default when you buy a router there are no security setting on a router and its open to everyone.
Don't want to sound like I'm trying to rain on your parade, but that statement ain't necessarily so. At least not in Aussie land. Might be the case if you buy one from a PC retailer, but if you get one in a bundled package deal of phone/internet, like I did from Telstra in Aussie, then the wireless router/nodem comes with a pre-installed security code.
Re general theme of this topic, I have a Netgear USB wireless dongle, and when I try to connect it to my ADSL2 wireless router/modem using OS WinXP Home, I get all sorts of problems. You can toss a coin on any given occasion as to whether it will connect or nor. Sometimes a re-boot fixes it. Other times I have to re-enter the security password.
However, if I use the same dongle on the same PC but run it on Windows 7 OS, it connects first time every time. So go figure, eh! My son's a PC techo and when I told him it worked flawless on Windows 7 he commented: "About time Microsoft got their act together! Only took them about 4 versions of Windows to get the Netgear dongles working properly."