Well that should be all you need - are you sure that the access point is working? Ie. Have you successfully connected to it? You say it doesnt work, but do you mean that you cant 'see' your wireless network at all, or just that it wont consistently connect?
When it tried the setup, it recognied the ID of my network, i stuck in the password key and it did connect, had a play around on Opera, but i have to say that i cant get a connection all the time (Which can be put down to the crap signal in my room).
But as long as your AP is working and you arent miles away from it then it should work ok
JP