you need a TV card
plug the video to it via the coax ariel lead
then tune the card into the signal from the video
then record!!!
you'll need plenty hard drive space though, and a good fast pc helps
bear in mind though before you go buying kit, a dvd recorder with a vhs slot aint too expensive
when you have bought one of them, i will post you my vhs collection to transfer
i got that old hi-5 programme, about hoffman kicking around on a video somewhere