The problems:
Front windows don't work and the engine is massively misfiring. According to the RAVE and some help here. This is likely attributed to a bad BCU. I went to a junk yard and yanked a same year (2002) unit.

Is it possible to simply swap BCU boxes with out consequence? To put it another way, is is Plug and play?

 

b c u is not part of misfire

 

Yeah, what he said. BCU stands for Body Control Unit, and doesn't do much with the engine.

 

No, not p&p.

 

you have to get it programed to your ecu and guages, etc.

 

I would not swap it out till you find your mis-fire issue, what fault code numbers do you have?
And if you swap out the BCU, as already mentioned, it won't fix the mis-fire and you will not be able to start the engine until re-programed.

 

Copy that. I'll retrieve the codes-after I buy a code reader. Any recommendations on a good (read inexpensive) one?

 

Go get the codes read at a local car parts place. Misfires are usually a coil pack, plug, or wire issue. I would guess coils though..

 

i disagree with this.

get the codes read, you are more likely having a problem with the wires or maf.

 

Would you have to have it reprogrammed if you replaced both the ECU and the BCU?