Were these the instructions you looked at, on the openSUSE website?http://en.opensuse.org/Live_USB_stick
The basic rundown of the page is:
1) Download the latest OpenSUSE Live CD Release from here -> http://software.opensuse.org/112/en
( You can choose either the KDE or Gnome version of OpenSUSE)
2)Download a Disc Image writing utility such as Win32 Disc Imager http://launchpad.net/win32-image-writer/0....2-r23-win32.zip
3) Unpack Win32 Disc Imager(Right Click-> Extract All)
4) insert You Flash Drive and see what the drive letter is in "My Computer"
5) Run the .exe file you just unpacked (Win32Discimager.exe)
6)Once it opens Click the Blue Folder in the "Image File" section and find the OpenSUSE release you just downloaded (it should be an .iso file, the program is only set to see .img files but typing "*.iso" in the "File Name" box, without quotation marks)
7)In the Devices Box change the Drive letter to the drive letter of your Flash drive
8)Click "Write" and it should write the Bootable image to your Flash Drive.
Note this is pretty much taken word for word from the above link (it also has really nice pictures)