DB_DataObjects: Dont know how to multi join

Hi all, I've 3 tables, locations (id, name, ...) categories (id, name, ...) loc_cat_xref (fk_loc_id, fk_cat_id) As I want to have more than one category for one location and vice versa I've created the 3rd table "loc_cat_xref" which contains the keys of the "locations" and "categories" table. I've setup the "*.links.ini"-File in this way: [loc_cat_xref] fk_loc_id = locations:id fk_cat_id = categories:id Now I want to have something like this: SELECT * FROM locations AS loc INNER JOIN loc_cat_xref AS lcx ON lcx.fk_loc_id = loc.id INNER JOIN categories AS cat ON lcx.fk_cat_id = cat.id or SELECT * FROM locations AS loc, loc_cat_xref AS lcx, categories AS cat WHERE lcx.fk_loc_id = loc.id AND lcx.fk_cat_id = cat.id How can I do this with DataObject?? I've tried to "joinAdd" the tables "locations" and "loc_cat_xref" and this is no problem, but if I want to "joinAdd" "locations" and "categories" I get an error as there is no relation in the "*.links.ini"-File between this tables. I've also downloaded the last CVS and there is a comment, that DataObject now supports "mega join" but I don't know how to use this feature and if this helps me. Thanks in advance for any hints. Bye Patrick