1. Press System ▸ Administration ▸ Services

Ubuntu ... 9.1 does not have a 'Services' button ..................................

Help Instructions as follows:
8.2.4. Problems connecting to shared folders in Windows

If you are unable to connect to a shared folder using Windows, try using the IP address of the Ubuntu computer rather than its host name to access the share:

   1. Press System ▸ Administration ▸ Network Tools and select the Devices tab.

   2. Select the name of your network connection from the Network device option list (for example, “eth0”). If you have several network connections, you may have to try this several times.

   3. Make a note of the number in the IP address column. It should consist of four numbers separated by dots (for example, “192.168.2.10”)

   4. On the Windows computer, select Start ▸ Run and type \\ipaddress in the text box, replacing “ipaddress” with the IP address of the Ubuntu computer

5.Press OK to connect to the shared folder.

If you are still unable to access the shared folder, check that the folder sharing service is running on the Ubuntu computer:

   1. Press System ▸ Administration ▸ Services

   2 Find the Folder sharing service (samba) and ensure that the checkbox next to it is checked. If it is not checked, press Unlock and enter your administrative password. Press Authenticate, then enable the Folder sharing service.

   3. Press Close