Try this website -- www.canals.state.ny.us or write to them at New York State Canal Corp., P.O. Box 189, Albany, NY 12201-0189. They will send you a ton of info which includes maps, fees, etc. Looks like it would be a wonderful trip, and I hope to do it one of these days. There was also a good article in one of the sailing mags, either "Sailing" or "Sail", and if I can find it in my collection I''ll post the issue here. Good luck, and let us know how you do, the trip sounds like one we all should try (at different times though!!).
Peter K., S/V Waltzing Matilda