What do I need to run programs?

I ma newbie in cobra:


I have written client and server in corba (OB-4.3.0). Mostly generated 
by idl. Compiled to programs: client, server.

I see a line in my programs:
         orb = CORBA::ORB_init(argc, argv);

Which arguments should I run the programs with, so they can communicate. 
Is some OB daemon running needed to run corba programs?


Wladek