I need to know if I need any special connectors or tools etc. to hook up a natural gas dryer to propane?

Your propane dealer should be able to help. I think you need a new orifice in the dryer. The gas line for a dryer uses pipe thread. If you are coming off a large outside tank, I think they use pipe thread too. If not, you will need a propane to pipe adapter. Some of your farm oriented places carry them, Agway, TSC, COOP, or again, the propane dealer.