Ok, I get it, dual boot. Yes you can serve the ISO image to Linux. After downloading (don't use IE, it has download file size limitations, use a download manager), leave it on the Windows filesystem. On OpenSUSE mount the Windows partition (you'll need to look at an OpenSUSE tute for this, search for it at the website) using the ntfs-3g driver, or even the old ntfs driver, since you only need read permission. Then copy it over to Linux and mount the DVD ISO image as a "repo".
I'm not sure, but you even may be able to do the NTFS mounting with YaST, I haven't had to do this for a while. Post a new thread about mounting NTFS from OpenSUSE and swerdna will be able to set you on the right path.