Anyone know how to take apart the driver's side power window master switch? Mine is faulty - the passenger's side window will roll down but not up - from both switches - and testing with a multi-meter indicates that the problem is in the master switch. All the switch likely needs is a spash of contact cleaner, but I can't get at the switch because of the way it's put together. It looks like it should easily come apart, but it doesn't want to, and I don't want to force it, since I want to avoid having to buy a new one!
Any suggestions.

You can gently pop the switch module out of the trim piece with a small screwdriver, but that may not help you much. To open the module up any further to access the switches would require a lot of desoldering, and unless you have the proper equipment and skills to do this I don't recommend attempting it. The circuit board can easily be damaged beyond repair.
I would not suspect the switch itself anyway, these are very reliable units and I have never heard of one going bad. You should thoroughly check the wiring and connectors first before diving into the switch.
The only connection that requires the main switch to be present for the passenger one to work is the ground, which passes through the main switch.
If you really believe the switch is bad you can take it to a junkyard and try to match it up. It is actually a Nissan part and is probably identical to the ones used in certain Nissans (Maximas, Pathfinders etc.) that should be plentiful in junkyards.