Unique Words in a file

Visual Basic program and/or c++ win32-dll to find all unique words in a file, and array buffer holding the unique words. Must be very fast! Must be very accurate! API only - And/Or plan VB source. No FSO Objects, Classes, ActiveX controls... etc. Two letter character words or less can be skipped! Do not keep track of how many times a word has been used or other type of tracking... Speed is more important. Regards ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Complete ownership and distribution copyrights to all work purchased. ## Platform Windows all flavors.