Hi, It depends on how your dvd recorder, if your DVD recorder is networkable and the hard drive can be mounted as a share its easy to set up assuming your dreambox has an image that supports this. I am using Digitalworldz 1.6.1 and this does support this
There is a thread on this in the main dreambox topic on this site.
Connect the dreambox to the input scart of the dvd recorder, then connect the output scart of the dvd recorder to your tv. This means you would need to have the dvd recorder on all the time, even when watching normal tv. The recorder should have a function to pass the signal from the input to the output without recording. And of course if you want to record, you can.