How do you change the plugs and wires on a 2002 Chevy Silverado?

[William H]

I want to change the plugs and wires on my 2002 Chevy Silverado. It alomost has 100,000 on it. I don't want to pay 400.00 to let someone do it when I can change them myself for under $50.00.
How long does it take to change them?