Thanks for your responses.
At the command line I typed /etc/samba/init.d samba restart and received the error message :
bash: samba: command not found
I also tried smbd and similarly its not found.
I even changed directory to samba folder but got the same error message.
When I typed /etc/init.d/samba restart, the error message is
'bash: /etc/init.d/samba: No such file or directory'
Any more suggestions?
I'm using Fedora Core2 and the Mozilla Firefox browser.