Map Suite Routing is designed to find routes on a road network using line based layers representing streets, major roads, highway etc. I think your case is outside the context of how Map Suite Routing should be used. You have shapefiles (converted from autoCad format) representing buildings and rooms. This does not represent a network and this cannot be routable using our product. I think that our main mapping component can still help you with all the various geometric functions it provides for finding closest features, spatial queries etc.
Actually, we had a post a little bit similar to your case, where the user asked about maritime navigation.gis.thinkgeo.com/Support/Dis...fault.aspx
I hope you see more clearly now in what way to use our products. Thank you.