Everyone's favorite crazy man, Maniac, has updated his ping guide.. Since I'm tired here's the ol' copy & paste:
Check it..The latest ping tutorial now boosts speed of internal modems, it generally boosts the com port speed and the vcache settings have changed so gaming ingeneral is faster. I've also added a FAQ section on the site for people that have been having problems - if you haven't been able to connect to servers in Counter-Strike or if your CD Writer no longer works, the fixes have been found. I recommend that all existing users of the guide go through it once again to lower their latency even more.