Workgroup networking

Archived from groups: microsoft.public.windowsxp.security_admin (More info?)

I have created a workgroup in my house laptop-xp home, 2 pc's xp-pro and a
mac os x. I am using one of my pc's a simple file server.On this pc I have
created a shared folder and would like to password protect it. How would i go
about doing this

Problem 1: I have setup a logon password on my file server so now when i
acess my shared folder over the network it prompts me for a user name and
pass on the laptop-xp pro, but on the other computers it automatically logs
me on the the shared folder. I guess my question is how can i set it up to on
the other pcs it would prompt me for a logon and password