I have not yet read about anyone getting a mfp going in Linux. I think GrannyGeek got either the printer or the scanner going on one. It might be possible to setup the printer and scanner as two separate machines.
Here is how you get a scanner going.
There is no scanner support module in the 2.6 kernels. Instead Sane uses libusb which is part of Vec 5.8 and 5.9.
you should get something showing the scanner is present.
and find the proper windows driver for your scanner. You should have a vendors disk that has several drivers on it. You may have to try a few to get the one that works. If you don't have the disk you should be able to download the required driver from the web.
copy the driver to
so that the firmware file reads
firmware /usr/share/sane/snapscan/<your driver>.bin
Xsane has been removed from the graphics menu in 5.9 so in a terminal run
This should bring up the GUI for your scanner. Accept the license and away you go. Xsane sometimes takes a while to find your scanner at first. But after that it works great and it supports faxing.
I will be watching to see how you make out.