I also use Dvd Flick quite frequently, with pretty good results thus far. I'd absolutely ditch Roxio. Download the zap tool HERE and get rid of it as it can conflict with other programs.
I have tranfer my entire VHS tape library, all my Karate videos to be precise on DVD. I used loads of different software including some paid ones but DVD FLICK was the best. I'd go as far to say it is just awsome. The best part is that it's free. I downloaded my copy from here Video to DVD edited by ddp if no luck then just do a google search. Just amke sure it's the latest copy. Good Luck!