Hi David,
> I know a number of people around here have written stuff to talk to
> SPI-SD cards - is any of it GPL or anything so I can go get it to see
> how it's done?
There is some sample code for an ARM processor over here:
http://www.sparkfun.com/commerce/product_info.php?products_id=752
--
Dave Hylands
Vancouver, BC, Canada
http://www.DaveHylands.com/