Create ISO ready for burning

[planecrazy.eu]

Hi

Any ideas on software that will allow you to create an ISO DVD (4.7GB) in preperation to be burnt?

I want to make the iso, and store it, and then be able to just burn the iso as and when needed rather than having to master to iso each time.

Its a video files, and at the moment each time the software masters an iso and burns it, but doesnt save the iso so i can burn again later?

Thanks