Obviously, I wasn't clear enough. I thought, you might misunderstand me, but johnb35 realized, what I want to do and here it is: my house and apartment are in two different towns and in both of them there is a wifi signal of my provider. In apartment was built cable installation, that I am using now and I don't need any equipment. In my house that's not the case, so I would use wireless approach. In one word, it is one system in two towns. My plan was, when I am in house, to use wireless access and when I am in apartment, to use LAN cable line, but with the same username and password. One of the officers of my provider, told me that is possible, but not at same time. I don't want to pay twice for same service, because half of my time I spend in my house and the other half, I'm in my apartment. WRXGuy1 and johnb35, thanks for help, but after johnb35's answer, I realize that's not possible.