rm/cobol to visual cobol: application windows/dialogs using rmputil

i have a program written in rm/cobol that i am trying to compile using visual cobol.  i am have set the proper dialect and its compiling successfully.  the problem i am facing is on the windowing system.  my current program calls rmputil to create the windows and dialogs.  since that is a compiled library that comes with rm/cobol (runpanel.cob, rmputil.cob, what are my options now?  is there source code available so i can recompile those? or i have to rewrite all my code? and what is available in visual cobol so i can do the migration easily?