Boot from DVD

No, you need to do as the SDB explains.

http://en.opensuse.org/Live_USB_stick

And I quote:

**Warning **Do not try to apply procedures found in internet for other distributions to convert the images into bootable sticks (unetbootin). Doing that will break the images. The openSUSE images are already prepared for being used directly on usb sticks, no further steps are needed.