Radeon SDR 32 MB please help

EVERY GAME I PLAY THE MENUS HAVE LINES GOING THROUGH THE TEXT!!! THIS IS EXTREMELY ANNOYING WHEN TRYING TO NAVIGATE THE MENUS… SOMEONE HELP ME PLEASE!!! also during tribes, lines even go through the chat bar… they are black lines, and its as if they “cut” the words up. AHHHHHHHHHHHH thank you so much for your time!!! i am on a 1.5 ghz new comp p4, gateway… makin me very angry!! thanks!