Little question/help about IPB

Hello,



I used IPB but the thing that I Don't like is there is No referral system in it. Like in myBB & VBulletin. Like there is a ref link for each user In there UCP so that if anyone registers on his link he becames his referral. Is there any mod or hook for this?



I really like IPB but I really want the ref system too.



Thanks in advance whoever helps : )



Regards,

B2S