HI Kermit,
If you no longer have any of the original files used to create the remote or the design, you'll need to download ControlSpace Designer and ControlSpace Remote Builder, and create a new remote design.
You'll have to connect to ControlSpace Designer in order to retrieve the program file. (.csp). Then you can open this design in ControlSpace Remote Builder. This is what's used to create the remote. You can drag and drop certain blocks from the design into a 'display' area. Then this can be used to 'send to mobile', at which point you would use the 'receive' option on a mobile device.
If this all sounds too involved, I would recommend contacting the original installer for this system, as they may have the original remote design files.
Thanks,
ChrisJ-at-Bose