On the desktop, go to the Go menu and choose Go > Connect to Server > smb://126.96.36.199, then click "connect" button.
When the list of shared folders is shown, select Art Shared and
When prompted for authentication, enter:
and click "OK".
This should display a drop box with nothing in it. You have "write-only"
permissions (you are not able to read or access other files in the folder or open it).
Do not worry about this. Just drag your GIF file to the folder icon.