How to wireless transfer a CSV file from an SD card to my PC?

Hi all,
I have a Mega 2560R3 connected to a Wireless SD shield (I also have a WiFi shield with SD if need be).

I have a CSV file saved on to an SD card that is inserted in to the Mega Wireless SD shield, and would like to transfer the CSV file from the SD card to my computer through wireless?

I'm unsure how to do this even after reading lots of posts on similar type problems? I'm unsure whether Bluetooth can do it or if WiFi would be a possible solution?

Any guidance would be appreciated on the best option and how to go about doing it?

Thanks in advance.

Dean