Well I'll add my voice to the throng telling you that singing can be taught. Its technique, just as much as figuring out where you put your fingers to make those sounds on a guitar. I should know; my family used to yell at me to shut up whenever I wanted to sing. Now I get people telling me I have a lovely voice. It helps, when you're looking for a teacher, if you have an idea of what you want to sing so he or she can help you get there.