Creating a tour:

http://www.googletouring.com/create.php

http://earth.google.com/userguide/v4/ug_touringplaces.html

Adding an image to a placemark:

To add an image to a Google Earth placemark, add the following to your Description box:

<img src="http://..../photo.jpg">

Then, remove the address between the "" and enter the URL for the image you wish to use.

When you've added all of your placemarks:

In Google Earth, go to Tools, Options, click on the Touring tab.

• Adjust the Wait at Features time to 10 seconds
• Place a check in the box for "Show balloon when waiting at features"

Click OK.