Quote by EnragedBullet:
That wouldn't be a bad idea if you're willing to put the time into it. It could be helpful to the merry people who inhabit this forum.
My answer is to buy a D-Link gaming router though, not only does it come preconfigured for Live, the above said setting is correctly set by default. Plus it is traffic shaping so you can frag away with no perceptible loss and any significant other can still use any other online applications they want at the same time.