Re: your window problem.
This is a relatively easy fix. Remove the motor assembly. Remove the gear
cover. Disassemble the assembly ( at this point you should apply 12V to the
motor to make certain it's not the problem...usually isn't), and clean the
shafts, and the aluminum casing where the shafts enter with a fine grit
sandpaper. Relube with a light grease ( moly based works well here), and
reassemble. Make certain to lubricate the lift mechanism while your in
there.

Re: ignition

sounds more like a problem related to wear than water. you could try
spraying a lubricant like WD40 ( which displaces moisture ) into the
assembly and wiggle the key. It's a good idea to disconnect the battery
first. Make sure that you know your radio code if you still have factory
audio.

Good Luck

BL