I just wrote a phonematic name search in C# using the Levenshtein Distance Algorithm. It is very tricky and was quite hard to figure out. This is the samething google uses, and many major search engines. it matches by rank to the text you type in, even if it is mispelled. I believe in open source, and I wrote this for one of my company projects, and with a little simple modification. You can use it for yourself. If you would like a copy of the source. feel free to contact me. Also, I am an expert in .NET so if you need help. Just ask.