A rate limiting application

I am new to C# but not programming. I am trying to develop a rate limiter/traffic shaper for personal use, to simulate old dial-up connection speeds. Specifically, those *slower* than 56k. Can anyone give the me the title of a book that explains how to do this? All the research I've done points towards registry access from the application. Is this true? I don't need hand holding, just to be pointed in the right direction.

Any links to books, articles, tutorials, etc. that can get someone started on this would be appreciated.

Thanks!