c# Youtube Uploader and comment rater

Hello, I need a program made in C# that will load a list of youtube accounts and do 2 main functions. The first function would be to select a video from a folder and upload it to youtube with title, description and tags (spun) from another text file. Once it uploads a video, it switches to the next account in the list until all accounts/videos have been completed. The second function would be to log into a youtube account and go to a video from my text file and thumbs up the comments of usernames within another text file. These functions should also use proxies for each account and delete cookies/flash cookies/cache etc after it logs out of each account. Full source code must be supplied, with it commented and coded neatly (for future updates) would prefer this to be done with httpwebrequests without the need of the webbrowser control, but if thats not possible let me know and tell me how else you will do it