I would like to add more information for you about this they have NT server on normal machine the clients running windows 98 they are attached to the domain the pepole running the IT in this company is not prof. the server is not maintained by them and it has never been maintained before.
as my 9 years experiance this is the first time I have faced a problem like this.
information may help
Best Regards,
Hisham Serry
IT Management