Use the typed command 'fdisk -l' minus the single quote marks to figure out which partition it is. Then as root using any text editor add the entry to the /etc/fstab file, example below;
Code:
/dev/hda3 /media/VFAT auto noauto,users,rw 0 0
See both man fstab and man mount for the detals. Just remember to create the mountpoint (/media/VFAT) first before mounting the partition, as root type something like;
mkdir /media/VFAT