set your target to the following "mailto:xxx [at] xxx [dot] com" + "?subject=" + Field Data + "&body=To confirm the request, please click the SEND button";
In the case he's talking about, "FIELD DATA" would actually be a reference to one of the controls on your form.
The code I use goes like this...
this.resolveNode("#event").submit.target = "mailto:" + textEmail.rawValue + "?&subject=" + textSubject.rawValue;... where textEmail and textSubject are text boxes on the form.
Incidentally, this code would go in the preSubmit event of the form's submit button.
"mailto:xxx [at] xxx [dot] com" + "?subject=" + Field Data + "&body=To confirm the request, please click the SEND button";