Finding a winch mount bumper for your Pathfinder may be difficult. You can always go with a custom bumper. I think Warn may make a winch mount for the Pathfinder that bolts to the frame.
The other option would be a front hitch receiver and a winch mounted on a receiver plate. Something like this: http://fmtc.com/~brule/hitch.html
Make sure someone responsible knows where you are going and when you will return. Don't radically change your plans unless you notify them.
I would also consider taking a basic class where they teach recovery techniques if you are not overly familiar with the use of the winch.
Catch lots of fish, preferably trout, and take lots of pictures! Mmm, trout.
2002 Jeep Liberty Limited 4x4
OME heavy springs
Bilstein front struts and rear shocks
Yokohama Geolander AT-S 245 75r16