custom script

Basically what I what is an affiliate script with all the common features: Per sale (Flat rate) Per sale recurring commissions 1st and 2nd tier affiliate commissions. Unlimited product categories and unlimited affiliate categories Unlimited affiliates Adjustable payout amount Full history of all transactions Unlimited banners Recurring commissions support Setting of cookie lifetime Banner and text linking codes system Mass emails to affiliates Built-in module for payout commissions Affiliate commission and downline tracking Real-time tracking system ...etc. Plus I want some custom modifications.