.Net Silverlight App Control with Brightsign?

I have a Brightsign HD device running on a 42" HP touchscreen in our lobby. It has done fine running the stills and video clips.  We inherited a touchscreen .net Silverlight based application that displays maps with our customer locations, etc. on it.  We have been requested to allow folks to walk up to the touchscreen that is running the still/video loop on Brightsign and touch an icon that would then shift to the interactive map.   I would love to stick with the Brightsign module as it has been dependable and simple to use but it seems like we are going to have to move to a computer feed to the touchscreen in order to run the Windows .Net Silverlight map and the current signage loop.   Your thoughts on whether I have to abandon the Brightsign and if so how I would run both on windows is welcomed (I haven't used other touchscreen capable signage software on Windows before).   Thanks