From FTPGET to file on SD card

I'm able to upload a file from my SD datalogger to my FTP server using a SIM900 shield with some code I found after searching for quite a while (not having any knowledge on programming I'm dependent on what I find online for now.)

I have been searching for code to do the reverse, to download a file using FTPGET and write the data into a file on my SD card, but the right stuff is eluding me...

Any pointers in the right direction will be much appreciated.

The code I use for uploading:

        myFile ="ooie.txt");
        while (myFile.available())     {
        mySerial.write(;    }