Yes, if you want channels beyond "basic cable". In my area that means anything above channel 100, including HD and premium channels.
A Comcast box is required for subscribers to the Comcast cable service. The box is provided by Comcast and any issues need to be directed to Comcast directly.
You will need to call the cable company for this.
no
No, you can still use an analog TV, but you will need a converter box to receive digital cable.
You must have a HDTV converter box from your cable company.
Very probably yes. If your new TV is High Definition, you will need to get a new HD cable box from Comcast, for which the fee is a little higher.
they will not work they will just be a box to use it or get cable u would need a converter box
No. You only need a converter box for analog TV and only if you receive your TV "over the air" with an antenna. If you have cable or satellite TV, you don't need a converter.
You need an hdtv cable box, so you'll have to call them. WARNING: Most likely, however, the Comcast box will lack a DVD slot -- essential if you have a subscription service, like Netflix.
If you get your signal from a cable company you might, all cable companies are not the same.
If you have cable or sattlelite hook up at your home, you really do not need a digital converter. If you only are using rabbit ears, you really would need a digital conterter box, so you would be able to watch TV.
No, a VGA cable does not carry audio. You will need a converter that has an audio input to add the sound channel to the VGA picture channel.