You probably don't have to add it. It most likely is already there, but is named Telstar 5 (T-5), Intelsat Americas 5 (IA-5), or Galaxy 25 (G-25). Galaxy 19 replaced Galaxy 25 at that location, and Galaxy 25 moved to 93W. The names change when new satellites replace old ones, and companies are bought and sold. The only thing that matters is orbital position (in this case, 97W). Check your satellite list to see which one of these is at 97W, as the name means nothing.