wpf app for Multiple simultaneous download

Hi, I want a application written in C#(WPF). It should have below features . 1) Should create your own thread pool for web request. 2) Each file should be quickly downloaded by getting segments of file, User can increase or decrease segments per file while downloading. 3) Multiple simultaneous file download should be supported and progress should be shown for each file downloading. 4) Files should be downloaded to a directory configurable and if same file already exist . create a file with appending(1) or (2) like in firefox downloaded. 5) Code should be commented and should be your own , not copied from codeproject or else wear (I am good at verifying copyright). 6) I know its quick and easy for a good programmer . If some one can do quick proof of concept and I will check the executable for features and award the project. All the Best