Hi, I have an Iphone 3gs that is jailbroken and cydia installed. I wanted to use a theme but i have no sim card. i have done research on installing themes and there does seem to be a way to get them on cydia, but not to install them. i figured to use my themes i need to install winterboard. Thus is my question, How do i install winterboard on my iphone without a sim card? I really need help and fast!