Windows Vista : Sharing Folder

You have to set permissions for a folder first.
Otherwise, you won’t be able to share it with “Everyone”!

Right click on the folder name.
Select Properties/Sharing/Advanced Sharing.
Click the checkbox “Share this folder”.
Click on Permissions.
Click on Allow Full Control, Change or Read.
Click on Apply, then OK.
You will be returned to the Advanced Sharing panel.
Click on Apply, OK.
You will be returned to the Sharing panel.

Now, click on Share…
Click on Change sharing permissions.
The list of users will now include “Everyone”.
In the drop down list at the top of the dialogue box, choose Everyone (All users in this list)
Click on Share.
Once the setting has been made, click on Done.