Reading unknown number of form variables -? need a hint/help..

Hi All: I have the following setup: The page contains multiple rows (something like a shoping cart) that consist of item_id, item_name, and item_quantity. Item Quantity is a text box that can be adjusted. I have a button to update all items..( I am using query and based on item_id I can update database..) The number of rows varies. My question is - I really do not know how to get variables and update multiple items in a database..I think I need to somehow grab them and place in array perhaps? I am really not sure..I do not want to reinvent the wheel..can some one give me hint? Is there a piece of code that I can look at it and learn from? Any help would be greatly appreciated Paul PS I also would like to place a checkbox (in every row) in the event the item must be deleted..