The easiest way to do it is probably to buy a "video stabilizer" off of ebay. This box will sit between your DVD player and your VCR. It disables Macrovision, so you will be able to make backup copies of any DVDs you own to VHS

. One of my friends got one of these off of ebay for his TV/VCR combo that wouldn't even
play DVDs because of Macrovision, and it worked flawlessly. I beleve he got it for around $25 - $30.
There may also be hacks for your DVD player, but the video stabilizer will work if there aren't.