Yahoo
Stores: Shipping and Tracking
To import orders from Yahoo, first log in to the Yahoo Store Manager, and Process Orders area.

Then export all orders (you can enter a broad range of order numbers).

Press Export. Order will pop up in your browser window
Save the file to the ShipRush import directory from your Browser (File
| Save As or Alt+F | Save As)
In ShipRush, press Refresh
Ship!