Website Login and Navigation behind the scenes .NET

Dear Bidders, This project is for .NET c# programmers only. Should work on framework 3.5 (not 4.0) 1. What we need is an additional module to our application. 2. It should do a behind the scenes login with HttpWebRequest object to [login to view URL] (that's an online supermarket) and then to add a list of groceries to the users shopping cart. 3. the module will recieve a list of product id's and a username/password and will do the whole operation described above. To make things simple - the module should have this one function: public void LoginAndAddProducts(string[] products, string username, string password) { // LoginToSainsburys(username, password) // add all products to trolley } 4. this should work pretty fast. (shouldn't take more than 10-15 seconds for a 15 products list). 5. We started to implement this ourselves but we are short on schedule and need the solution in the next few days. we used WebRequest for the post requests to do the website comminication. In addition, we can send you our code or help if there are any questions (since we already started implementing it, it could save some time). 6. *** Before implementing we need to agree on the architecture and the general design of the solution *** ------------------------------------------------------------------------------------------------------------------- PLEASE READ THIS: You really should have more than just some experience with behind the scene user simulation / webrequest / in order to take this project so please don't bid unless you know your way in those areas. Thank you, Uri.