1992 Chevy Corsica Replacing Hydraulic Brake Lines

My brake line on the passenger side became brittle from age, and has cracked right where the hose meets the metal housing to keep it in place behind the tire. I have the replacement hose, but am not really sure how to go about replacing it. I could use some pointers from someone who has done this before. Preferably someone with experience changing it on a corsica. Thanks, Trina.