VB .NET File Transfer with Bandwidth Throttling

I am writing a simple VB application that will allow our users to transfer files and folders from one computer to another. I also need to be able to throttle the bandwidth used by the transfer. So, I need to be able to call the function like: transferFile(sourceFile, destinationFile, throttleSpeed) or transferFolder(sourceFolder, destinationFolder, throttleSpeed, booleanRecurseOption) the application will be installed on multiple computers. they should have the ability to send to any other computer that has the application installed. I will also need the code to be commented in English so I can fully understand what is happening. I've included a screenshot of what I believe the application will look like. This is obviously just a general outline. Thank you!