Change Cart on ASP.NET Website

Hello Everybody, We have a website in ASP.NET, and want to change the categories and the shopping cart, so that when scrolling down the page, they also scroll along with it, so they are always in sight? If you are able to do this to our current website, we then have another 3-4 tasks, and another 3-4 websites to apply the same changes too. We are hoping to work with somebody on a long term basis. You must keep in regular communication with us while working, and complete the task in a timely fashion. This tasks is quite urgent, so we will be looking to take on somebody quite fast! Many Thanks & Happy Bidding!