@wisemoon: It should be the combobox at the top of the Layers window/dialog. The label is 'Mode:'

In other news, this tutorial enabled me to take what was a rather mediocre map and turn it into something that actually looks quite cool. Presentation may not be everything, but it sure does help!

http://people.eecs.ku.edu/~jciskey/U...Unlabelled.png