One of your heater elements is likely burned out on the seat heater problem. This is a thread where it was discussed.
On your seat position, if I had to guess, I'd guess that you are using the keyfob for one driver (like maybe driver 2 - has the 2 on the back if original) and have programmed the door button #1 for your settings.
The supercharger oil is available at the dealer. Use a hex wrench to remove the plug from the snout of the supercharger, use a sprayer from a spray botttle, or something similar to pump it out, then refill up to the bottom of the threads.
I see that Pat beat me to a lot of this, but I'm too lazy to edit it all.
Black 2000 SSEi, Silverstar Headlights, Angel Eyes fogs, 3rd brake light overlay, hi-flo cat, drilled 180 degree thermostat, Intense FWI, PCM, shift kit, and 3.4 Pulley. Solid front mount.