In looking further at Brother's site, my gut instinct would be to tell the original poster to get the rpm packages of the LPR driver and the CUPS wrapper for his printer. Once he has the packages, follow these steps for each package (do the LPR driver first):
1) Open a terminal. As a regular user
, issue the command
2) Type su to become root and enter the root account password. Issue the command
where name.of.rpm or name.of.tgz stands for the name of the Brother rpm.
Before doing anything else, the original poster will also need to download a Slackware package of the C shell, as the Brother cups wrapper is a C-shell script (ACK! but I digress.) Go to http://packages.slackware.it/
and search for tcsh (you'll get matches for tcsh and zsh - either one should work, but I think you'll be safer with tcsh for this task). Be sure to select the Slackware version which corresponds most closely to your version of VL so that you get a working package:
VL 5.0/5.1 - search for Slackware 10.2
VL 5.8 - search for Slackware 11.0
VL 5.9 - search for Slackware 12.0
Download the package, then as root issue the command "installpkg tcsh*" (without quotes) to install the C-shell package.
Once all the packages, including the tcsh package, are installed, then open your web browser and type "localhost:631" without the quotes in the address bar and go there. Add your printer following steps 7 and so forth from the following Brother support page: http://solutions.brother.com/linux/sol/printer/linux/cups_wrapper_install.html
Hope this helps,