To record a show, just do what Marc said.
Or, if you look at the second picture I posted, it shows a description of the show, and you can choose to record just one program or the whole series. Also lets you choose between recording "all" shows or just "first run" shows. Also lets you specify how many to save - "one" "five" or save them all until "Disk is full". And it will only record shows on a given channel, so if there are a zillion reruns running on another channel, you won't get those clogging up your recorder.
You can do a "search" for Star Trek, and tell the recorder to record every single show it finds! (As if you didn't already have them all on DVD!)