Merging of 7 classes each with different sysconfig entries.

I am trying to do a merge of 7 different classes with each one having different sysconfig entries and it is not working. is there something i need to be doing on the initial control file? Where do i put the classes in the initial control file?, do i put it in the <install> section or the <configure> section? Could someone give me some help on this? Thanks, Cameron