You are not likely to be able to do this in this way.
You will need to examine the instructions for the recorder for accepting signals from an external source. Like as not it will be L1 or L2. and will be via the yellow coded video RCA socket or S Video.
However even if you manage do achieve this the result on the burned disc will not very likely be readable in a PC and certainly not editable.
The move must be loaded into the PC via a movie editing program such as Ulead Movie plus 10
Serif or Pinnacle or even Windows Movie maker.