Matthew,
This fall, after the last leaves drop, dig up your fruit tree with a
root ball that is as big as you can drag to the new spot. Then dig a
hole for planting about the same size using the dirt to fill up the
first hole, plant your trees. The roots will grow during the winter and
should be ready for next year's growth period in the spring.

Richard Reames
http://www.arborsmith.com