How do you change the spark plugs and wires on a 2001 Oldsmobile Intrigue?

i know they are hard to isatallthere are no spark plug in this car. Tjere called bolt-head plugs which each take 1 hour to isntal abd they must take takr the anterlator off and i remommend to take to a shhop because it will take about 4 to install them beceause the enhine must cone out and take to s ashop