I currently have a RCA DSS receiver and I was wondering how well the Pronto mimicks that remote. There are two sets of arrow keys that are good for moving through the guide and based on what I have seen those keys would have to be soft keys. Any feedback on this? Also..can you program the "go back" button (previous channel)?

The RCA has select keys that are used for purchasing movies and so on. Would it be best to have a main dss screen with the most used buttons and then program a set of buttons that are used when recording a program or purchasing a pay per view? Any insight on the use of this for DSS would be appreciated.