1997 Buick Lesabre Gas smell from under the hood.

Smells problem
1997 Buick Lesabre 6 cyl Automatic 113000 miles

I noticed a gas smell from under the hood and found that gas is leaking from the fuel line connector down the back of my engine. I want to know how do I replace the connector with a new one? I went to NAPA part store and I see that they sell the connector alone for $7.00 so I figure I can replace it instead of the whole fuel line.