Set oFSO = Server.CreateObject("Scripting.FileSystemObject") >Response.Write oFSO.FileExists("\\myserver\sharename\folder\sus\myfile.dbf") >>You might also want to test permissions with:
Set objPermCheck = Server.CreateObject("MSWC.PermissionChecker") >Response.Write objPermCheck.HasAccess(sPath & "\" & sFile) >>Where sPath is a physical path. FWIW, opening the connection through VFP uses different permissions than if you use the connection through the Web server. The first uses your NT permissions and the second uses the IUSR account.