Writing to SD Card via Ethernet


I am new to this forum so I hope I am posting this in the right place. I am stuck on trying to figure out whether or not it would be possible to write to a flat-file stored on an SD card via an ethernet connection if I were to use this ethernet shield (https://www.sparkfun.com/products/9026).

I want to be able to store a few configuration settings in a .txt file (or similar) stored on the SD Card that the Arduino is able to read from, I want to be able to make changes to these settings via a web-interface and in the future maybe some kind of custom software.

Any direction would be appreciated!

Thanks, Ben

Yes, that should be possible.