I have a desktop pc and bought the DIR-601 so I could use my IPod touch. Everything works good but I think one or two other people ,possibly neighbors are using my wifi. Today I used my iPod and checked under general settings and noticed a wireless name I did not set up but then it disappeared. Also on dlink account online a few months back I was trying to do something with account, security and noticed one or two connections I didn't set up. What are the steps securing router,wifi so others cannot access or use ? Thank you for your help.