Machine A is running WinXP Pro, machine B is running Win98SE. Both machines use fixed IPs and share Internet access through a broadband router, and both belong to the same domain. On machine B there are users I and II. Now I want, with the domain server shut down, to share a certain folder on machine A with user I on machine B (user II must not be able to access it), while both machines can still access the Internet. How should this be configured to make it work?

