INFORMATION IN BOLD IS WHAT YOU WOULD TYPE

Ubuntu does not use use root it uses sudo for this privilege to set the root (sudo) password type the following in a terminal

sudo passwd the screen will now prompt you for the password you wish to choose..

I have in this instance assumed that fat drive is /dev/hda2 is the location of Windows partition (FAT)
Local mount folder: /media/fatdrive

sudo mkdir /media/fatdrive
sudo mount /dev/hda2 /media/fatdrive/ -t vfat -o iocharset=utf8,umask=000

fdisk -l lists all the known connected drives on a Linux system and the filesystem used. (you may need to use this to discover the drive label such as dev/hda1 or dev/hda2 or hda3 etc

Ubuntu linux mounts the drives locally in /media as such the command sudo mkdir (makes the folder required to mount and can be named anything you wish) and then you give the command to mount the specific drive or partition and use the correct file type... both the NTFS and FAT mounting have been posted in this thread