I have a 93 Mazda MX3, that is only driven once or twice a year. How often should this vehicle be driven to keep it in good repair?

Once or twice a year? i think it would cost more in maintainence then it would be worth, why not just sell it? anywhoo, if youre using conventional motor oil, that should be changed every 6 months or 3000 miles whichever comes first. I would put some dry gas in the tank to prevent water and rust buildup. and always keep the tank full to prevent condensation.. keep an eye on the coolant and if it starts to corrode, do a flush.