> Dawkins is a zoologist and an evolutionary biologist.  Other than Selfish
> Gene and the article "Viruses of the Mind" I haven't seen anything about
> memetics from him, and I've looked.  
If you want to read Dawkins' most involved discourse on memes, check out
chpaters 5 and 6 of "The Extended Phenotype."  The title of chapter 6 is
"Organisms, Groups and Memes: Replicators or Vehicles?"   You might also
want to take a look at chapter 5 of the book he wrote for the Science
Masters series "River Out of Eden: A Darwinian View of Life."  Chapter 5
is called "The Replication Bomb."
Enjoy.
-KMO