Structural and Conceptual dillemma with multiple word FTSearch on multiple tables

[Jarrett Lenox]

I having trouble understanding how multiple word searches are done with FULLTEXT on multiple joined tables.
Example:
I want to search for "Apple Idud".
*Manufacturer, Apple, is stored in one table with id, man_name, man_desc.
*Item, Idud, is stored in another table with id, item_name, man_id (manufacturer id), item desc.

I know how to "explode" the search string and MATCH AGAINST a single word and a single table in multiple queries, but what I can't conceptualize is how to have a query join the two tables and search for "apple"+"idud" as the most relevant result.
I know the wizards on this forum can do this in their sleep.

Please Help, I'm a total Newb.