I have ordered a HD system (it hasn't been installed yet) from DirecTV and was just looking around for a surge proctor or UPS. Do I need one with coaxle connections? I have 40" and 32" Sony's being delivered this weekend. If I get a UPS, what size do I need? 500? I've been recommended the Tripp Lite HT10DBS but that is only a surge protector. Help! I understand Macs but this HD home theater stuff is confusing!