If you would like to do it for about £50 you could put an analogue TV card into the back of your PC and then connect the video to the input and Shazam! That is, providing that you have a decent sized hard drive and DVD writer on board (not just a CDRW drive)
It also makes editing easier and you can chop out advert breaks and the like, before burning to DVD
(An aside here, but when I had cabinets of video tapes and programmes that I had recorded, I found the adverts to be an odd sort of social commentary of the times. High tech gadgets like the Walkman (TAPE!!!! I kid you not!) and fashions that somebody should die for, etc. etc. I think I ought to get out more....)
Conan