My parents live in a seniors building in Abbotsford where Shaw is the primary TV provider. They are Shaw customers but only have a HD receiver, and we'd like to get them a PVR. Not being a Shaw customer, I'm wondering if there is any restrictions on adding a PVR to their system? Is it as simple as plugging it in, or do I need to register it? If I buy one from Kijiji, are there any pitfall? Any way to tell if they are stolen etc? Are there any older models that I should stay away from - or conversely models that I should try to buy? Thanks in advance for your advice!!