>You would use a different search mechanism (not PHDBase) with SQL Server. I'm not sure how would you achieve the same functionality for message searching.

This is another issue. For now, the code is .NET migrated for that part but the data remains VFP, which does the job pretty good so far. So, the search engine will remain as is for a while. In SQL Server, I have done some tests two years ago and I obtained about the same results as performance issues go.