..put there everything as you may see with the other mcu's there..
the sdcard shall then work when connected properly.. those demos wait on "type any character to start" so you have to push the button 
Run sdinfo.pde and you may see then what is your card like. In the older sdfat versions there is sdfatbench.pde - it measures the r/w speeds.. I would recommend you to have a look on the examples from older versions of sdfat as well..
Thanks for sdcard socket info, I've seen tons of those sockets on ebay and it seems it is the one I'll order.
P.