I am looking for a mod that will allow me to pay for items using gems. Even if it means not getting full value for the gem.

If not what would I need to do to make this with no edits to the menus as I have zero knowledge with flash.

Off the top of my head I guess I could make a script to remove the item from the merchant and give to the player (and the gem to the merchant) after cheking the gold values of the gem and item but how would the script know what item I want and what gem I am offering?