You would need a video input card and the video capture software to rip old VHS video onto the hard drive. Then you need a DVD writing/authoring/buring program to assemble and write the caputured file to DVD format. I'm not sure what to recommend for software, but I'm sure you can find it with a quick google search. There might be some "shareware" that gets your few files done within the 30 days trial period Check CNET or download.com. Read the agreement to be sure it's not spyware. And do a search just to be sure. You will need the video capture device for sure. And you'll need a spare compatible slot to plug it into unless you find a USB video capture device. I recommend the plug-in cards, because you can use them later for surveillance/motion detection on your property.
You need a DVD burner, not a CD burner for these larger files, even if your DVD player reads CD's in jpg format. Those DVD burners are not very expensive these days and you can put one in your system in place of your CD burner (or as an extra if you have cabinet space) for around $40 bucks delivered. Try newegg.com. The lite-on stuff seems to be okay. The DVD burner can still write musice or data CD's, so it's a reasonable swap-out for the price. You don't loose capabilty by taking out the older CD writer and installing a DVD burner.
You may have compatabilty issues playing computer burned media on home DVD players even if they play okay on your computer. I've bought films (VHS to DVD rips) on eBay that were produced on computers and they stall every so often when a corrupted frame is encountered. The computer plays them fine start to finish. But who wants to watch Victoria Paris or Tracy Adams on the Computer instead of the DVD player, lol?