Flash CS3 error:

I am new to AS 3 programming. I have written simple program in “sample.as” file and also saved “sample.fla” with a text box in it. I tried to test the movie, it displays nothing. I tried all possibilities to find the answer, can anybody help me? When i checked for the errors in code in sample.as file, it shows a message abt compiler errors, but doesn’t display what kind of error it is. Any help will be greatly appreciated.

package flash.text {
public class MyClass {
public function myMethod() {
trace(“I am here”);
}
}
}