Could just need a wheel true. But, because of it's age, it's possible some spoke nipples are frozen. An overhaul should be possible, but take it to someone with patience who will oil the nipples and give them time to loosen. Also, with a 25 year old bike, if you plan to ride this very much, get all the bearings repacked in grease - old grease ceases to be grease. This kind of overhaul might cost you $150, or do it yourself for the learning experience. Alternately, drip oil into anything that moves and just enjoy riding it.
Oil is good, grease is better.
2007 Peter Mooney w/S&S couplers/Terry Butterfly
1993 Bridgestone MB-3/Avocet O2 Air 40W
1980 Columbus Frame with 1970 Campy parts
1954 Raleigh 3-speed/Brooks B72