I have America's Army on my comp, and i want to play it. The only problem is, my mouse won't move when i load the game up. Would I need to reinstall the game or is there a simpler way?

try updating the drivers for the mouse, then if that doesn't work open the game and try using the keyboard to open the options/settings menu and see if you can enable the mouse within the game that way, if not then try unplugging the mouse and plugging it back in while the game is in.

there are no guarantees any of these will work but they a good place to start.

I'm pretty sure it isn't the mouse, because I have the same equipment on my other computer and the same game. As for getting to the settings of the game with the keyboard, I've came real close. I learned the tab button selects certain things but coincidently not the settings. Space bar is the same as clicking too. And escaped gets me out of the game. However every other button on the keyboard does nothing. I haven't tried unplugging the mouse yet though, so I'll do that and if none of it works I'll have to reinstall the game.