Windows should read the memory card in your phone by plugging it in. In some cases, you'll need to set the phone to connect to the computer to read the memory card as a device.
Unfortunately, I'm not a phone expert, and I don't have support here for that specific model. I would imagine a 16GB card should work, but I'll yield to the website unless I can get further information.
How do I use the Convoy as a USB mass storage device? I got conflicting information from Samsung. The written instructions on the web said that I have to use a 32 GB storage card; but the rep on the phone said 16 GB. Which is it? Also, the rep said that I shouldn't need a driver as long as the card is inserted. Is this true?