1. Go to the directory containinge the folder you wish to share.
2. Right click the folder and click "Sharing and Security"
3. Click "Share this folder" and assign write permissions to the desidered users
Client Side:To write in a shared folder, vCardOrganizer need to be Trusted, so:
1. From Control Panel double click on "Administrative Tools"
2. Double click on "Microsoft .NET Framework 1.1 Wizards"
3. Select "Trust an Assemply"
4. Follow the Wizard and assign "Full Trust" to vCardOrganizer.exe
Now you can work on a shared folder.