The front passanger door is difficult to open and close. Everything appears normal and it doesn't shut unevenly it's just hard to open and close. Any ideas?

 

Was the car in a wreck? Have you had body damage? IF not then maybe someone leaned on the door to hard or something, I know there are adjustments for the door, check out a Haynes manual or equivelant. Also lube the door guide slide.

 

Lubricate the hings and the little slider thingy.

Or, just jump through the window like Bo and Luke Duke.

 

Lube up the hinges and especially the door slider. It's that black plastic piece that rides in and out of the door as it opens and closes. This is a known culprit of "Sticky/Tight" doors on the 4th gen. Mine was replaced by Nissan shortly after I baught the car.

 

Try using a silicone lubricant (as opposed to WD-40.) It worked great on my back doors when they were having difficulty opening. Spray some on the hinges, and move the door back and forth to work the lubricant in. Just make sure you don't inhale any of it.