Help *Form Checking*

Hi all, I’m in the process of scripting out an error checking function(s) to fish out incorrectly inputed text fields. For example, in a First Name text box, I want to make actionscript shoot the user to frame 2 (the ‘Incorrect Format Please Try Again’ frame) if they insert any numbers or symbols into that particular text box (e.g. Jason1, J4son, ]ason). All of the text boxes in the scene are drag/drop/resizes from the components window (Components/User Interface/TextInput). I feel like I did this for a class a few years ago, but I don’t have many of my old work files and I can’t figure out how to do this (intuition evading me on something as seemingly simple as this is almost embarrassing). Any help or links(to tutorials) would be much appreciated.

if (fname.text has a number or symbol in it){
___gotoAndStop(2);
___trace(“Stop being a noob, Jason”);
}else{
___gotoAndStop(3);
___trace(“Addaboy!”);
}

It should look something like this with the exception of the has a number or symbol part, that’s what I’m stuck on. Thanks for any help.