in the USA 18 years is the leagle voting age. It is the age at which the Law considers you to be an adult. At the age of 17 you are still under your parents responsibility and they have to answer for your actions.
intellimouse optical on my machine and logitech optical wheelmouse on the wifes both work great for cs and FPS's. i like the extra buttons, you know just in case i needed them for anything.