Email notification on new affiliate / Commission with discount error

[fruitvlieg]

Hello all,
I'm new to VirtueMart and VM Affiliate and have some questions.
- Is there a setting for the vendor to receive an email notification when a new affiliate registers?
- If a customer orders online through an affiliate he can use a coupon code for discount. The discount (percentage) has to be reduced from the commission (percentage) of the affiliate. So if a customer gets 10% discount, the commission will become 32%-10%(discount) = 22% commission. Can someone direct me how/where to fix this?

I'm using VirtueMart 2.0.24 and Joomla! 2.5.14.

Thanks!