Method 1 (Recommended)
Step 1 - Ask server admin for sudoer permission
Edit "/etc/sudoers" file, and append the following line.
xavierlin ALL=(root) /usr/bin/mount, /usr/bin/umount
Step 2 - Install cifs-utils
To mount a shared folder you must install this package, otherwise you will get a very confusing error message when mounting a folder.
mount: /home/xavierlin/source: cannot mount xxx read-only.