problam with a complex JOIN query

[eluser]A.M.F[/eluser]
[quote author="Jon L" date="1222863738"]Can you export & display each table structure plus a couple of rows per table?

Additionally, have you tried testing your query directly with phpMyAdmin to see if it returns how you expect?[/quote]

this is my cats table:

- cat_id
- cat_name

and this is my objects table:

- obj_id
- obj_name
- obj_cat_id
- obj_cat_name

and i haven't tried to test the query in PMA, how can i do it?