Sansui DVR editing recordings?

I have a Sansui DVR with 80G hdd I just want some help in editing sections of something I have recorded on the hard drive. There is a feature that says segment but when I select that it simply plays the recording. How can I choose sections that I want to delete.

Transferring to ‘DVD Recoder and Home Entertainment’…

I don’t understand what you mean but do you think part of the solution is to do this editing on my PC