CDR Problem

Hi, We are trying to implement CDR thru Replication Manager (Windows NT 4.0 with Informix 7.22 server). We have two instances of Informix 7.22 running at the back end (sun sparc). We have defined the sqlhosts file as required with 7.22 (defined 2 groups for the 2 instances). We have also done the required registry entry on the NT side and could able to access informix instances (at the back end) thru set-net and dbaccess from the NT side. But when we try to initialize the cdr thru Replication manager, it is giving an error saying "can't initialize cdr". Could you give us any hint why it is happening? Also, though unofficial, I heard it is possible to work with CDR from the command line. Is any specific path to be set in the profile for that? Because when I tried to define replicate group (with define_group command), I got an error saying "define_group not found". I appreciate your help in this regard. Thanks