CableNut

From the developer: "CableNut is a tool for optimizing your Internet Connection. We have provided a way to tweak almost every possible TCP/IP registry entry via the CableNut program. You can load 'CableNut Custom Setting' files that are included with the program to tweak your Internet connection. You can make your own 'CableNut Custom Setting' files save them for later use, or distribute them to anyone with the CableNut program. Cable, DSL, Satellite, and Dialup connections are supported out of the box."