BlueTsunami said:lol...does have a point. Having the correct speaker arrangment and using 5.1 to its potential (while listening for footsteps and or shooting), you could pick out your enemy just by the sound the enemy makes. That could be used as an advantage also.
Yeah, and stop PC users from running at higher resolutions because they can resolve things in the distance more easily. And make them all use the same mouse, just in case one has a faster refresh that gives finer grain control. And frankly your chairs looks a bit more comfy than mine, so clearly we need to standardise on that too...
If you want to have a totally level playing field then you're probably taking playing very seriously - in which case you'll probably get a good setup (or already have one) and won't expect everyone else to downgrade to your level. If you're just an average person looking to have some fun then you probably won't care much if another player has a slightly different view of the world in the first place.
And besides that, in the few times I've bothered playing something on the LAN at work we were all on fairly different spec'd machines and it rarely mattered - the betters players won whether they had good or bad machines, big or small monitors, and whether they ran at 120 or 20 fps...