I have a WRT54G, not sure what version but my install disk says 2.3. I set it up so you need a password to get on, everytime I try to get on it asks me for a password and I get on fine. When friends come over and bring their laptaps they can get on without being asked for a password, so I am guessing neighbors might be using my wireless. How can I set it up to make sure it asks for a password to everyone that might try to use it? Also, is there some software that can let me know if someone else is using my wireless? Thanks for the help.