I need new functions getting coded for my file hosting script

I have a file hosting script with some basic functions and it needs some other functions included on it. Multi-Server support Anti-dupes system no need to keep multiple copies of same file, our engine smartly detect dupes and use only one copy to save disk space Site Statistics Visually check how many files were uploaded/downloaded, how many users registered per day, how much bandwidth consumed, track payments File folders for registered, premium user Downloads tracking Track distinct file or overall latest downloads with Referer/IP info in Admin Area Coupon codes For Promoting service using coupon codes for premium days Affiliate system Users receive funds from new registrations came from their affiliate and download links Reports users are able to track their daily downloads/profit statistics. Flash upload Choose multiple files with one selection. Reseller Create reseller accounts with one click I Ajax download bar. It needs to be shown the progressbar with how much kb/mb download how much time left. Now its shows only % I have only premium and free user, i need : I need to specify download, upload limit for registered users. Best Regards