so the sprint htc hero came with a 2gb sd card right. i have another 4gb one and i want to use that one instead. question is do i just COPY everything over from the 2gb sd card to the 4gb sd card? i tried searching already but maybe i didn't use the right keywords? i typed sd card and all i saw was people asking if it will fit 16gb or 32gb's. please let me know guys. thanks.