I have finally found the time to write up and make available a library for the Maxim MAX696x family of LED matrix drivers.
The library should be compatible with the MAX6960, MAX6961, MAX6962 and MAX6963 devices. More information on the devices can be found at the Maxim website: http://www.maxim-ic.com/quick_view2.cfm/qv_pk/4910
The library and a description of how to use it can be found here: http://expat.dyndns.org/arduino/library-for-max6960/
I've only been able to test it on my own home made display which uses two MAX6960 devices and four 8x8 LED modules but it should be easily expanded to any display configuration, up to 256 devices.
I am writing up a description of the hardware I built to test the library, it is incomplete at this stage but can be found here: http://expat.dyndns.org/arduino/max6960-led-display/
There are a couple of photos showing the display in action.
I'd appreciate any feedback on the library!