Click this link:
http://www.powerstroke.org/forum/vbgooglemapme.php
then just above the map.. you will see a button that says "Your entry" click it
When the new screen appears. you can choose where to place your marker. You should give the marker a title... and if you wish, you can switch to satelite view and actually place the marker directly on your house with a little work finding your exact spot.
You can also add some text to describe your location.
Then click the Update the Information button, and you should be done.