You need something like the BELKIN DVD Creator USB 2.0 link below gives details, software required comes with it. While this is an Australian site such devices would be available in your local stores or online. http://www.dse.com.au/cgi-bin/dse.storefront/4aa1fb8c01...
Depending on your needs you can also get capture devices as part of a tv tuner, in usb or pci/pcie cards also with software included and about the same price or more depending on brand and features, like dual tv tuners and fm radio.
You simply take the output from the vcr's audio & video using standard rca leads, record using the supplied software, playtime = record time, no short cuts.
The tv cards usually come with adptors for standard rca connections.
If you are trying to copy protected media I doubt this will solve your problem, as the vcr will encrypt the outgoing signal.
Modern player & recorders have hardware encoding to prevent protected content being copied. The result will be a distorted signal.
smilal - alas, probably got run over by "copy protection" clods. I've had mine for a good number of years 6 or 8). Think I got it from COMPUSA. It was not the greatest but worked for VCR "Quality" and I could back-up some of my DVDs that programs back then could not.