Liz, have you looked at book summaries and reviews of Dylan Thomas' "Under Milk Wood"? I can't imagine that info would be at all difficult to find.

You may want to start here: http://www.google.com/search?hl=en&rlz=1R2GGLL_en&q=under+milk+wood+analysis&aq=3&oq=%22under+milk+wood%22&aqi=g10

Or here: http://www.google.com/search?hl=en&rlz=1R2GGLL_en&q=under+milk+wood+characters&aq=0&oq=under+milk+wood+character&aqi=g2

Have fun!