Tribes 2 troubles

Ahoy hoy! I recently got Tribes 2. About three weeks ago I downloaded my graphics card’s latest drivers from its manufacturer’s site. Upon playing T2, the game froze. Somewhere along the line something caused me to use the OpenGl Setup included with the game. However my Pc is doesn’t have an internet conection, and now the game is totally screwwy, I can even access the game menu any more. What do I do?