How do u delete a wireless network connection on my windows xp?

I created a wireless connection for my router on my windows xp with "Wireless Network Setup Wizard" and i made that connection without a pword and i have been trying to figure out how to delete that connection. I Also try to make a new one but it doesn't work. I also tried on my laptop to put a pword on it but then it says its an unsecured connection. any help?