Assigning a symbol or color based on Attribute

Dec 13, 2011 at 5:46 PM

I am creating shapefiles with the locations of farms in the State of Wisconsin.  Each farm has one specific animal (chickens, swine, cattle etc.).  When I load the shapefile on the map I would like each farm to have a different symbol or color based on its animal attribute.   (For example, the chicken farms will be marked with a cross and the cattle farms marked with a circle.)  How can I do this?  Thanks for your help.