I'm not sure I understand the confusion. MaxLink will create a category on your Palm with the same name as your Max address book. If your Max address book is named "MyClients2003", there will be a category on your Palm created with the same name.
There's no way to specify that your want your "MyClients2003" Maximizer address book to synch with the "Personal" category on the Palm. It's done automatically and I don't think there's any way to change it.