The picture on HD channels is no better than regular channels
First of all, you need a TV that is capable of displaying High Definition. You will need the proper cable to work with your HD set top box - either an HDMI cable or component video cable, plus you need to set your TV to the proper input setting so it will use the correct connection. Also, you should know that some TV programming is not filmed in HD, so those programs will not look any better than the programming on standard definition channels. Mediacom can provide you with the proper cable upon request. Call Customer Service for more information.