I don't beileve that Mercedes sells the (W210) headlight bezel (door/cover) separately. You'll probably have to get new lights, which aren't that expensive. =)
1994 E500 (MY SUNDAY DRIVER)
1993 190E SPORTLINE LE W/ M104 SWAP
2000 BMW 528I (WIFEY'S CAR)
"Excuses are crutches for the unfounded."