This file is an enhanced sniper scope and laser point for the TF2 Sniper class. On a 4:3 ratio screen ("square"), you will see the whole screen when zoomed in and on a 16:9 or 16:10 ratio screen ("widescreen"), you will have a much larger visible area but with black bars on either side of the scope. The Laser point is now a cross as opposed to a large dot, it also has neon green dots around the edge to make it easier to see if you are being aimed at.
Extract the two folders to x:\Program Files\Steam\SteamApps\<
V2 removes the blur on DX9 or above. Enjoy.
Also, Try not to whine about "It makes the game unfair for people who don't have it" I don't use it in matches, neither should/can anyone else. If people want it they can use it if they don't want it then they don't have to use it.