Im using stock sprint everything, and it seems some apps have been installing on the microSD all by themselves. I have lots of files on the stock 2gb SD card that I need to transfer over to the new class 6 8bg card I got for $15.

is it as simple as just copy/pasting the files over or do i need to reinstall all those apps?
Also, the current card is formatted in FAT, should I reformat the new one to FAT or is their a better option this phone can handle?