[CentOS] Mounting cifs shares by non-root users on CentOS 4.6

I'm trying to set up mounting of a Windows share for non-root users via 
/etc/fstab on a CentOS 4.6 box - I've followed the instructions at:

<http://wiki.centos.org/TipsAndTricks/WindowsShares>

Using something like the /etc/fstab example given in the wiki page 
(with, of course, using a valid share, username and password for my set up):

//winbox/getme /mnt/win cifs 
user,uid=500,rw,suid,username=sushi,password=yummy 0 0

When as a non-root user I do:

% mount /mnt/win
mount error 1 = Operation not permitted
Refer to the mount.cifs(8) manual page (e.g.man mount.cifs)

Running mount as root works fine, but I can not get it to work for 
non-root users.

Any ideas?

Thanks

James Pearson