Hey Jerz and Jani, thanks so much for your input. Jerz, I'm gonna try disconnecting the battery for a while and then reconnecting it, and THEN replacing the fuse to see if that works. I appreciate your suggestions. I know this is a tough one so I'm not expecting miracles, but if you have any other kind of experience that might relate, any info can only help me at this point.

So yeah, heater's still not working. Well the heat comes out of the vents very slowly, so the HEAT works, but the control unit for the fan, recirc. air, airflow, A/C - that whole unit isn't working. And also the rear defrost isn't working, even though the fuses for the rear defrost are fine.

Any other ideas? Thanks!