TT,
I sent to Malcolm @ Top Dog yesterday under the ng subject Converting WO to Layaways, an Orders (Detail) Report. It will display all "orders" layaways, workorders, and backorders.
Last night I modified it some more to add some additional fields for someone else and have changed the name because it was too similar to a Microsoft report, Order (Detail) vs. Orders (Detail). So now its called an Order Fulfillment report. Find it attached. By default, it will only show orders that can be filled, either partially or completely. If you want to see all open orders, go back to the filter and delete the OnHand > 0 line.
If you don't want the extras on the report, compare the two and modify the WO report with the changes I made to display an On Order column.