how do I change the device uri for a scanner?

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http://askubuntu.com – Ubuntu 11.1 (32 bit) Brother MFC-7220 I have an old Brother all-in-one printer/scanner/fax. I have installed the printer side and it is working fine. I have installed the brscan2 for the scanner side but can not get it running. The install files are set up for usb devices, but this model uses a parallel port. After installing the printer I had to change the device uri to parallel:/dev/lp0 I assume that I need to do the same for the scanner but I am not sure where to do this. Thank you in advance for any assistance you can give. (HowTos)