First, if you plane to fly with a local club, make sure the radio is 1991 type accepted. Being only 10 years old, it should be, but take it to a LHS or ask a club member to make sure. Only this type of radio is AMA and FCC legal to be used, and old radios can not be converted. Now, if it is a legal radio, a standard Futaba charger whould work. Make sure of the polarity of the charger connector. I believe Futaba always used a center-positive connector to the charger. A transmitter crystal should technically only be installed by a certified technician. With a radio this old, it's wise to send it off and have it checked out, anyway. The batteries are probably shot after not being charged all this time. As suggested, slow down and check things out. Although the radio itself was free, you may end up spending almost the price of a new, complete setup to make it flyable.

Dr.1

PS This may be a stupid question, but are you sure it's a Futaba? Hitec used to make a Challenger radio.