Re: Do I still need a self-install kit if I supply my own modem?
I did a self install of a new modem I purchased at Best Buy. I already have Comcast cable TV service so there was already coax coming into the house.
The self install kit that Comcast will sell you is nothing more than a high quality splitter and a short length of coax cable. If you don't need these or already have them, then save your money and don't buy them from Comcast.
I placed the order for internet service online. All I had to do then was hook up the modem and call Comcast support for modem activation. All that involved was reading the modem MAC address to them and it began working immediately while I was on the phone. Painless.