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
Adjustable payout amount
Full history of all transactions
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
Plus I want some custom modifications.