Thanks for the video links, but that's not what I want the datagrid for. What I want is to have the datagrid (or any flexgrid) to enter several rows of information. Then when my client presses the "Add-to-Cart" button, I take all the information from the grid and add each item to the cart.
I really don't need to update the database or even interact with the database. I just need a grid container to capture the rows/fields of data and then handle the information myself.