I recently bought a 1991 Lumina which was very well kept up with repairs,etc.,(at least what I was told), and it seemed to be a great bargin for only $750 (130kmiles). My only problem was that I didn't check the ac/heat:banghead: , and since it's been in the upper 90s, I turned the ac on while driving around on the first day I got it. The this is that my girlfriend noticed that I had what looked like water leaking on the floorboard/upholstry from the firewall seal directly under the cooling control panel/radio. Is this just a bad gasket, or is it something I need to replace? I heard it could also just be condensation from a hose...Please help!!!

Sounds like your evaporator condensate drain is clogged. Look for a rubber 90 degree elbow down low on the passenger side of the firewall, under the hood. You should be able to reach it from the right side. Pull it off and squeeze it to open it back up.