Things You'll Need
Instructions
Put an SD card into your computer's SD card slot. If your computer doesn't already have an SD card slot, many electronic stores offer USB-to-SD card converters for sale.
Open "My Computer" and navigate to the SD card's file directory.
Open a second folder and navigate to where the ROM is located. Drag the ROM file onto the first folder to cue up a file transfer progress bar --- once the bar disappears, the transfer process is completed.