JAB_Creations - 7:01 am on Jan 16, 2011 (gmt 0)
Unless I'm mistaken there is no way to execute a write query using a JOIN.
What I think you're trying to say is that you want to update items in two tables with minimal use of queries (since they are write queries). If true then what you'll need to do is create an array in your scripting language and build your UPDATE query for each table, one query per table. I'm not sure what your level of skill is so if you're not sure how to change multiple entries on the same table in a single query I recommend making a test table and practicing with phpMyAdmin which while it's code is messy and full of ticks and the spaces are in the wrong places should at least get you on track to figuring out how to better construct your queries.