replace spark plug

Hi,
Just would like to know how to replace the 3 spark plug on the back?
It's a 97 3.3L.

Thanks.

http://forum.chryslerminivan.net/showthread.php?t=5036

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Thanks for the link.
I'll try and see which way to go.

http://forum.chryslerminivan.net/showthread.php?t=5036

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Is it easier to change them on newer (2007) Caravans?

Are they easier to replace in 2007 caravans?

I wonder it is easier to replace them in 2007 cavarans.

I wonder it is easier to replace them in 2007 cavarans.
No, same engine.