First off, many thanks to LUK for this great app . For Vista users it is about all there is to choose from in the way of free burning software that is worth a toot, and in fact is a better application than most of the retail software. That said, I was very disappointed to find that ImgBurn does not support multi-session data burning. I am a graphics designer and backup my work daily to removable media (cd) as do my associates. Flash drives, thumb drives, re-writables (suck), whatever, are just not practical in this circumstance. Please incorporate multi-session capability into this fine cd/dvd burning application and make it the greatest free burning software available. LUK, you will go down in software authoring history as one of the greatest if you do. I will will check back often for that new and improved version!