I'm not sure what engine you're working with, but here are a couple tips...
The upper intake gasket can generally be reused if it is in decent shape.
When you get the lower intake off, stuff paper towels in all the ports and holes to prevent gasket material from getting in there. I use a shop vac to pick up all the crap that you scrape off.
Never use the cork/rubber end gaskets that come with gasket kits. Instead, use a 1/3" thick bead of RTV. Let it skin before reassembly. It provides a much better seal and doesn't shift around (common problem on V8's.)
It is an easy job, it just takes awhile because of all the stuff they have hooked up there. Its also a good time to flush that cooling system since you have to drain the coolant anyway.
Good luck, Rob
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no Explorers, but plenty of Fords:
'82 Mustang GT 351W
'82 F250 351W
'91 Mustang LX 5.0
'78 Mustang II pro street