Only create user if payment succsessful

Hi,

Great add-on for joomla, everything has been a breeze until i've run into this issue.

At the moment, Hikashop seems to register a user before they have paid for the item. Ideally I would like it so only customers who have bought anything are in my Joomla userbase.

At the moment you can fill in the registration form and click register even if the credit card field has not been entered (most shops don't work like this)

Please let me know if theres any workaround,

Many thanks for your time.

Sepyh.