Writing dual layer DVDs

Hi all, I noticed that in k3b DVD projects are limited to about 4.4 GB. Does k3b support larger projects? Does cdrecord (ala SUSE) support it? Real question is, can I write a 7.5gb iso image to a dual layer dics (with the appropriate drive) like I write any other iso image, or is there anything special I'm aware of? I finally took the plunge and bought a dual layer disc to make a backup/to-use-at-work copy of my SUSE 9.2 DVD - don't want to make such an expensive coaster! -- Kind regards Hans du Plooy Newington Consulting Services hansdp at newingtoncs dot co dot za