I read that sentence 3 times and I kept getting confused, but I think what your asking is just how to do a simple join.
Let me know if this doesn't answer your question:
items table: items
items_id
items_description
items_manufacturer_id
items_name
manufacturer table: manufacturer
manufacturer_id
manufacturer_name
manufacturer_address
The join looks like this:
$result = mysql_query("SELECT * FROM manufacturer, items WHERE manufacturer_id=items_manufacturer_id AND items_id='1'");
//Then to access the data, you would do something like:
$row=msyql_fetch_assoc($result);
echo("We have a lovely $row[items_name] available, made by $row[manufacturer_name].");