Actually yes. I did this for a friend of mine a while back, but it's a little fiddly. Assuming the hdd is okay, you will need to remove it from the unit.
The format that your files are recorded in will depend on the end result. I connected a DVD re-writer to the system and copied the files across that Way.
Your best bet is to buy a caddy from Amazon or the like first and copy to PC.
pretty basic but know need to spend a fortune. You will need a third party application to convert / copy to DVD, but post back an I will point you in the right direction.