This is a UDF I created for myself, to handle file locking on an SQLite database that was being shared on a network. Since I did not want to run a process on the server to handle the file locking, I needed a way to avoid write conflicts from the clients themselves. ********** Thanks to an ISP problem, the ZIP download is not available.  The most recent code will be maintained here. **********   Updated to work with 64-bit Win7 Minor performance enhancement as proposed by orbs (see >pos