online payment system

We need an online payment solution similar to worldpay or click2pay with all necessary tools, scripts or codes, and kits. You need to briefly indicate your approach. Bids not addressed to this specific plan would be ignored. Please note that this project is not just web development. Individuals or companies who worked on similiar projects would be given preference. So, please highlight your related work. The payment will be subjected to successful implementation, testing, and launch of the system. Scripts/codes must be written to cater to the needs of most users(similiar to the above referenced systems). The site must have strong SEO to get a high ranking in online or electronic payment system search. The purchaser owns the rights of all purchased scripts/codes/information. The project must be completed with in 5 days, after finalizing the provider. Testing, implementation(trial run), and launch must be completed with in another 3 days. The service provider must guarantee his work for a period of one year.