ASP & Flash for dynamic jpeg exporting

I have a form on a site I’m building where we’re trying to make it so someone can sign their name in a little flash window and then export the picture of their signature to a jpeg. I’ve found various tutorials on doing it with PHP, but our whole site’s backend is in ASP and our developer only knows ASP. Here’s a link to an example of the signature box: http://beta.qbitz.com/sig/sig.html

Any ideas, or links?

Thanks