Uhh, you know how Quake3 with Rails only is a totally different game on the Internet than a LAN party? This is because you have to "lead" your opponents with the weapon on the Internet when on a LAN it's "Instant Hit." This means that on the 'net you will be trying to line up straight-on shots, where the lag does not affect the aim. Strategies are totally different that way. If you play Quake single player or on a LAN enough you will notice that with this mouse you have to not only lead your aim, but it even takes a very noticable fraction of time longer to fire. That means that even when your aimer IS perfectly lined up and you DO click the button, the player will have moved or your aim continued moving by the time the weapon fires. This is IMPOSSIBLE to get used to in Quake3 Arena. If you're gonna be gaming, get a different mouse dude...