The Windows FindExecutable API called from Windows XP will give an error (usually 31) when trying to find the executable program for a file with .html extension stored on Samba.
It returns the correct executable if the file is renamed with the .htm extension.
It returns the correct exectuable if the API is called from a Win9x machine.
Thanks
Peter Juliff

PS
below is a little program to use to demonstrate problem

==============
#include <stdio.h>
#include <windows.h>

main(int argc, char *argv[])
{
   HINSTANCE status;
   char exepath[1024];

   if (argc != 3)
   {
      fprintf(stderr, "usage: %s directory file\n", argv[0]);
      exit(1);
   }
   exepath[0] = '\0';
   printf("About to FindExecutable(\"%s\", \"%s\", ...)\n", argv[2], argv[1]);
   status = FindExecutable(argv[2], argv[1], exepath);
   
   printf("==> %d, path: \"%s\"\n", status, exepath[0] == '\0' ? "ERROR!!" : exepath);
}