We actually are beta testing the Segway Key Copy software that will be available from Segway Inc later on this year to its dealers. It doesn't quite have all the features as the ToyBuilders version but is OE. It is pretty much the same program that they used at SegfesT and will allow change in turning, speed, and timeout (It is still a DOS program though) As far as parts go... EmbeddedDataSystems.com, a great company and they ship internationally.
Austin Colby (Austin@SOH)
Potomac Segway
339 West Antietam Street
Hagerstown, MD 21740
Phone: (301) 766-0488 Mon-Fri 10am-6pm EST
Fax: (301) 766-0215
http://www.potomacsegway.com