If you still wonder what HostBridge can do, here is the answer!
I've added this introductory video-tutorial to the HostBridge page, so you can see how using Windows and Linux applications is easy, when Icaros Desktop is running in hosted mode!
By the way, starting with version 2.2.5, Icaros will include also a couple of double-state icon packs so you can associate HostBridge's scripts to proper icons with ease, even if you're running Linux (under Windows, HostBridge can extract icons from win32 executables, but new icons can help with 64bit ones).