I don't think it would be worth messing with the dish to try to repoint it at anything because like I mentioned it won't be there much longer anyway if it does still happen to be there right now. If you insist on trying I'm sure the information can be found at DBSTalk.com. I don't know for sure which satellite it would be on but I'm guessing probably either the one at 101° or 119°. There are also a few threads there about how to aim a dish.
I'm sorry if you don't like it, but I understand why DirecTV is doing this, and it's not to push some kind of agenda. Right now they are sending out two different sets of guide data. The old MPG data that your box uses is only used by really old devices, and there aren't that many of them left out there in customer's homes. So DirecTV wants to get rid of that old MPG guide data so that bandwidth can be used for other stuff like their new APG guide data, or more SD channels, etc. So they are contacting their customers who are still using these old devices and upgrading them to newer models that use the APG guide data for free and without any kind of commitment. Once they get everyone on newer equipment they will completely remove the MPG guide data and use that bandwidth for something else.
I don't see why you think DirecTV should keep around the old MPG guide data for you and others like you that are no longer their customers. Why should they continue spending their money and using their resources to provide you with a service that you pay nothing for, rather than using their time and resources to improve their service for their paying customers?