DVD/DLs and K3B

Hello everyone: I'm using SuSE 9.1 / 64-bit mode and I'm trying to make a copy of the SuSE 9.3 DVD before I do the install. Now, the new 9.3 is a dual-layer DVD (more than 8 Gigs of data). K3B can 'read' the DVD/DL when 'forced' but when it comes time to write, I get an alert that says the 'media' [the blank DVD/DL] is not recognized. My question: is K3B under SuSE 9.3 able to burn the dual-layer DVD/DLs? Or, is there another program I can use to burn my back-up copy. The burner does 'read' the dual-layer DVD/DLs so the problems seems to rest with the software. Any answers greatly appreciated. Cheers, Mike