Hi,
Read David's answer and went to download.com to search for WhoHasIt. I found it and also got the URL of its manufacturer. Go to
www.gadgetfactory.com and look for WhoHasNt (specific version for NT server). If as I suppose you share your database and tables from a NT server shared folder, this tool should reveal what's going on with your tables.
Hope this helps,
Solo se que nada se
Fausto J. Garcia Pino - MCSD.NET
.NET, Oracle, Tronador & Fondismo!