C# Web Automation Expert

I need a C# Application create that is like an "MDI" program. Each window will be a split view with a browser on the bottom and a tiny form on top with configuration. On the main app toolbar will be a go button and a button to add or remove mdi "workers". This project is all about automation. Each worker will go to a website (same site for all workers doing the same task). They will look for specific inputs on the page, enter some values and go to the next page looking for something else. The website is an informational site and the information changes quickly. There are thousands of users trying to access this information and it's important that we act fast. One of the pages is a "waiting area" that uses Javascript to force the browser to wait. It may be that you have to append script tags to the document using the browser api to change this javascript to avoid the waiting process. There are about 7 pages to automated. The MDI interface must have a tile button to tile the windows. On the final step if keywords are matched then that window plays a sound file and loads at 1024x760 and let's the end user start to work. Here the end user will know what forms to fill out depending on the stocks listed. You must be good at C#, good with interfaces, understand html and javascript to make this fast (1/10th of a second and another user gets the stock data instead). Knowing tools like Firefox Tamper Data plugin is a big bonus.