Hi,
Disable autodisconnect. http://support.microsoft.com/default.aspx?scid=kb;en-us;297684&Product=win2000

>We moved off of Novell/NT4.0 onto Windows XP clients and a Windows 2003 server. FoxPro apps running on the client machines experience frequent network disconnects, with error messages such as "Invalid/seek offset" and "Invalid path or filename." When users leave the app and come back in, they are able to access the screens that originally generated these errors. Is there any way to fix this? Thanks...