Surname Suggestor List is a free program you can download that is really pretty cool. I dont know how many of us have sat using the search on Heritage Quest or Ancestry only to get frustrated because the name doesn't come up in searches, and then eventually we find that its because of how it was transcribed. This program gives you some different ways of spelling the name to try in a search.

http://home.triad.rr.com/combsfamily/sslmain.html