Need affiliate feed script importer

Hello programmers, I want you to read this job carefully, so you fully understand what i need. I want you to create a script where i can upload an affiliate feed from any affiliate company like zanox for example. The script must have the following requirements: - I can use and upload as many feeds as i want - The script will run slowly in background so the website works perfectly without slowing it down - Sitemaps must be created and splitted so that it wont be bigger, than 10 MB and it wont reach the 50.000 limits. Even if i have 200.000 products - SEO friendly - Slider function and option (people can choose color, size etc) - Feed must have a cronjob function so the website will automatically update and synchronise the products and URLS - Script must be smooth and fast as possible. You can think with us what we will need. Like downloading the images and use them cache? I dont know you are the expert? Good example (competitor website) what we are looking for: [login to view URL]