When you say you want to be able to record from dvd im not quite sure what youmean do you mean you want to be able to record dvd to video?
If so then you'll have a bit of a problem as I take it your video has one scart in in which case you'll only be able to record either from freeview or your dvd.
The way I have mine setup is. Dvd player straight to TV. Freeview box has a scart from it to the tv and one from it to the scart in on the video and then scart out from video to TV if you wish. I just have my video running through RF though, I have the aerial in to the freeview then the RF out to video and RF out from the video to TV.
When you want to record off of your freeview you need to set your video to record off of the line in source and you'll still be able to watch the normal channels while you do through the TV.
Hope that helps