Administrate Microsoft Access MDW file from c#

I had tried this question in access forums and other few forums with no luck. Basically the requirement is that to administrate(add, delete,modify ) Access user and groups from c#.
Actually in Access MDW security files you have certain queries to get user membership and view all users which can be accessible through normal OLEDBconnection but the tricky part is adding users,groups etc .. to this MDW file.
Please share your thoughts.
Thanks.