No. Look Back works on any Digital Cable set-top box, so you can use Look Back with your current Digital Cable set-top box.
To receive all services, Digital Cable, remote and lease of a digital set-top box are required. Some services are not available to CableCARD™ customers. Not all equipment supports all services. Look Back® is available on select shows from participating networks. All services and channels may not be available in all areas. Subject to change without notice. Some restrictions apply.