Opening V7 file in V8 plataform in readonly mode from MDL.

Please. I don't know how to open a dgn file on format V7 in plataform Microstation V8 without necessary to convert it. I need to open it in readonly mode. I tried to use this functions but they simply open the file and don't have any parameters to set about version of file.

mdlInput_sendKeyin( "newfile test.dgn", FALSE, FALSE, NULL );
mdlSystem_newDesignFile( filename );

Please, If somebody knows about this...

Marcio Henrique Gonçalves Pinto from Brazil
mhgpinto@tecgraf.puc-rio.br