difficulty installng Brother Scanner-Printer MFC-665WC

HI, I'm new to Ubuntu and I can't get my Brother Scanner-Printer MFC-665WC to work. I have installed Simple Scan and XSane Image Scanner, but neither sees the scanner. The printer does seems to be recognized when I plug it in. However I can't understand how to install the driver that Brother gives me. Could someone walk me through the steps and help me out? I would really appreciate it. Below is the email that I got from Brother giving me instructions to install the driver. The compressed driver file is called linux-brprinter-installer-1.0.0-1.gz and the uncompressed file is called linux-brprinter-installer-1.0.0-1. Thanks!

Instructions from Brother Customer Service

# The tool will be downloaded into the default "Download" directory.
(The directory location varies depending on your Linux distribution.)

e.g. /home/(LoginName)/Download

# Open a terminal window and go to the directory you downloaded the file
to in the last step.

# Enter this command to extract the downloaded file:
Command: gunzip linux-brprinter-installer-1.0.0-1.gz

# Get superuser authorization with the "su" command or "sudo su"
command.

# Run the tool:
Command: bash linux-brprinter-installer-1.0.0-1 Brother machine name

# The driver installation will start. Follow the installation screen
directions.
When you see the message "Will you specify the DeviceURI ?",

For USB Users: Choose N(No)
For Network Users: Choose Y(Yes) and DeviceURI