Network MFC420CN on Gutsy 7.10 64bit:

After following steps 1-9 listed in the tutorial, printing from my MFC420CN still wasn't working, so I found another step from the Brother website:

A note from the BSC Linux Support FAQ for Printer:
* I am using a AMD64 bit version of Debian/Ubuntu Linux. I installed both LPD/LPRng driver and the CUPS Wrapper driver, but I cannot print.

Install "lib32stdc++6" or "ia32-libs".
Also:
* I'm using an AMD64 bit version of Linux. Can I use the Brother Linux printer drivers?

Yes, but please note the following conditions:

For DPKG package users:
Install the driver using the command option "--force-architecture".
If you cannot print, install lib32stdc++6 or ia32-libs.

Also, try copying the file which name starts with "brlpdwrapper" in the
" /usr/lib/cups/filter" to the "/usr/lib64/cups/filter".
After installing both lib32stdc++6 and ia32-libs for good measure, and setting "Device:" to "LPD/LPR Host or Printer" on the second page of the "Modify Printer" dialog, with device URI set to "lpd://xxx.xxx.xxx.xxx", my test page fired right up!