DMO is an obsolete object model that wraps SQL Server. It has been replaced with SMO in 2005.
but I think you are thinking of dbo, not DMO. dbo (usually) in 2005 is the default schema that objects are created in. In 2000, there are no schemas and dbo is a user.
if you want to create a table in a differet schema (2005) or owned by a different user (2000) just specify it in the DDL thus:
create table MySchema.MyTable (mycolumn int) --2005
create table MyUser.MyTable (mycolumn int) --2000