I know a bit about this, as I run a company that does this professionally (http://www.gophoto.com
), and we've done thousands of VHS to DVD
Dingo07 is right on. It only makes sense to do VHS to DVD conversions for tapes that are one of a kind (family archives), for quality & time issues.
But as for legal issues, there are legitimate fair-use protections for making a personal copy, esp. when simply doing a format conversion for your own personal archive (not for any distribution or sale). But, getting around Disney's copy-protections is more trouble than buying a new DVD, by far.