Where do I find my Wifi SSID (Arris ST? There are SIX numbers on the set-top box, but none of them work to connect my new laptop! I'm writing this from my old laptop, but obviously, I would prefer to use the new one!
Do you mean your home networking router / gateway device for the internet service ? Not a Set-Top-Box for TV service right ? If so, and if it hasn't been changed from its default value, it is on a label on the bottom, back, or the side. It may be called the "Password" or the "Network Key" on that label.