how can i access usb memory stick as a non-root

[harshavardhanreddy mandeepala]

hi
i am using linux fedora core 3.
i want to access usb memorystick as a non-root user.
i can mount and umount as a root,but when i want to do it as a "guest"(non-root)
it is giving as a  "only root can do it"
 i have changed the ownership of  /dev directory  to "guest" but still
it is giving same error.
even i added these fallowing lines to my /etc/fstab

/dev/sda1 /mnt/usbstick vfat noauto,user,umask=000 0 0 

still it is giving same message as a  only root can do it.
so
If u know the solution plz mail me to                hvreddy1110 at gmail.com
thanks in advance.
Regards
hvreddy