You should not have to get your ISP involved--should be plug and play. If you were changing your modem, yes--the ISP needs the serial number and (or) the MAC address from the modem. The router is after the modem so contacting the ISP should not be necessary--unless something very unusual occurs, but usually adding a router is very easy--be sure and update the firmware and use good security with a strong hard to remember password like FvB$k18tGk&. Just remember to document the password in a convenient place. However, even if you lose the password, you can reset the router to its original condition--but then you have to enter in all the information you added, so a hassle, but a manageable problem to have.