Be aware that ANY program that is used to create images directly to DVD is opening the door to problems. I highly recommend writing the image to HD, then copying to DVD later. Having the image available on HD is very handy, and this makes the DVD a second level of backup rather than your only resource. I'm not sure about Acronis, but the others create a bootable disc that has caused problems for quite a few people trying to restore an image in DOS.
I use DriveImage to create scheduled nightly images on HD, then copy that to DVD weekly. I also keep a small FAT partition on my main HD with all the DOS versions of the programs on it, so I can run them with nothing but a Win98 boot floppy.