I have brought my the Sony RDRGX120 dvd recorder. The tv I have has bulit it freeview on it any idea how to get it to record off freeview channels

The IDTV has to be connected to Line 1 of the Sony RDRGX120 dvd recorder.
Then use the input button on the dvd's remote to select Line 1,to watch and record programmes from the IDTV.
The IDTV will have to remain on and can't be switched off whilst recording.