To Get Driving Directions: Enter your two addresses in the A and B boxes of the driving directions module on the Yahoo! Maps home page.
A written driving route will then appear, along with the map. The map will show the Full Route. You can interact (pan and zoom) with the full route map to customize it to fit your needs. If you would like more detail for your route, then you can enable Turn-by-turn maps that will display a zoomed-in view of each move.
If you want to add additional stops to your route, you may edit and add new locations from the written driving directions part of the page, using the address entry boxes
For more help with the new Yahoo! Maps for Broadband, Click Here.