rajunpl,

thehorse13 is on the right track. I imagine you are using Windows 9x (95, 98, or Me) and are looking in the Networking Properties section. I forget which tab name, but it's the far right-hand tab that lets you choose what type of share access you are going to use: share-level access and user-level access.

Share-level access is what you want to choose. As thehorse13 correctly stated:
You had three choices: Read Only, Full, Depends on Password. This model, as you can see, is very limited.
User-level access is Microsoft's frail attempt to allow Windows 9xto utilize domain accounts for permissions. If a domain was established, you can choose User-level access and direct it to the Primary Domain Controller. Then, when you create a share, you can associate permissions on that share with a domain account or security group (BTW...it was really flakey when used with Active Directory). But remember, this security is only associated with someone connecting to a share you have created on the computer, not any type of actual file-level permission such as NTFS.

Bottom line Share-level access is cheap, generic Windows 9.x security. User-level access is used in conjunction with a domain.

Enjoy.