Well, in this instance, the original poster has not stated that this is a commercially made dvd. Home made dvds (home videos) are not subject to the same restrictions as borrowed commercial dvds.
Since home made videos do not have any kind of encryption applied, this is a simple thing to do with ImgBurn. Personally, I'd make an ISO file from the original, then burn the ISO to the new disk.
To do that click Create Image File from Disc, and put the ISO on the hard drive. Then click Write Image File to Disc to burn this newly created ISO file onto a blank dvd. Once you have it on the disk, and have tested it to make sure it works correctly, you can delete the ISO file from the hard drive.