It looks like it would work there. You can then add it to the email body using something like:
<?php echo(WA_getSavedFormValue('CheckoutWizard_Sharp_Default','Comments')); ?>
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.