Its four wheel drive eh, how much do you want for it?
If you were close by I might take it!
I'd guess its actually all wheel drive and making that into 2wd is not too easy I believe. Does it have a lockable centre diff? then I guess it shouldn't be too hard.
Your car should be worth more than a geo metro many many years newer, atleast around my place it would be.
For ultimate mileage a 2wd car is better but yours should be quite good if you ever think you'll need 4wd in the future.
Ian