I solved the ODBC problem by bypassing the OdbcCommandBuilder object entirely. My solution works quite nicely, and gives full access to .NET Dataset functionality. I've posted a comprehensive article, including fully documented C# source code, to our website at www.hotquant.com/proj/hqweb/odbc.aspx.
Hope you find it helpful.
Jason W.
Jason G. Williscroft General Manager HotQuant, LLC