I see that you are trying to mount an external Samba share. I don't think you can do that in fstab. You need to create a shell script similar to this:
/bin/mount -t smbfs -o username=foo,password=bar,gid=100,fmask=664,dmask=777 //source /dest
Place the script in /etc/rc.d/init.d. Then create a symbolic link to the file in /etc/rc.d/rc5.d and prefix S99 to the file name. For example, if you name the script foobar then name the symbolic link S99foobar.
S99 gives the script the lowest priority during boot time.
You just need a random username and password if your share is public.