Look for Chevre, a mild soft goat cheese, usually in log shape. Some stores carry Queso Asadero which is a mexican melting cheese good for fillings but it is not made from goat's milk. Queso Cotija is a mexican crumbly goat cheese with has a sharp taste and does not melt very well and is used primarily to crumble on top of enchiladas. A mild feta cheese is an acceptable alternative to Chevre. If you are uneasy about goat cheese use montery jack or munster cheese (which is used most often here in the Southwest).