I am assuming you are the owner of an original VHS tape you want to make a backup copy of.There are video capture cards that would let you capture it form your VCR to the HD.Then you would have to convert the files to a DVD file format.Then burn that to a DVD disc.
This would be a better way for some.You need another settop DVD recorder or a VHS player .Then purchase the product below.Put it in between your VHS player & DVD recorder.
http://www.xdimax.com/grex/grex.html
Sorry no easy way