IN  PCHAR Buffer,
  IN  ULONG ByteCount

Routine Description:

    This routine is called to generate a 32 bit serial number.  This is
    done by doing four separate checksums into an array of bytes and
    then treating the bytes as a ULONG.


    Buffer - Pointer to the buffer to generate the ID for.

    ByteCount - Number of bytes in the buffer.

Return Value:

    ULONG - The 32 bit serial number.