I assure you the <textarea> tag will automatically wrap text. I have done 3 projects in the last month using them. One was contact form, the next was a shipping information form, and the last was an employment application. And all of them wrapped the text in the <textarea> tag with no extra effort.
Maybe it would be a good idea if you posted your html and we could see what you have and then maybe we can get on a more specific line of questions and answers.