Tell a friend with a bonus

Hi,

I´m looking for someone that can help me with an extension that basically work like some of the existing extensions but none of them offer what I want. At least I haven´t found one.

I know of this extension that makes it possible to tell a friend and add a coupon which that the friend can use:
http://www.opencart.com/index.php?route ... a%20friend

What I also need done is to create a coupon for the customer that sent the "tell a friend-email". The thing is that the coupon will only be available when the friend has made her/his first order.

If there is someone that can help me with this please give me a quote for the work.

Kind regards
Melker