Welcome aboard to the CD Freaks forum
Unfortunately, I can confirm that a Lite-On DVD recorder purchased in Europe (any model) will not tune in NTSC broadcasting, whether from cable or over the air. Even if you were to hook up an external receiver to tune in Cable, Satellite TV, etc. I don't think there is any easy way of being able to record this on your DVD recorder as the recorder is only designed to record PAL content. For example, if you were to try to record from an NTSC source connected to its AV inputs, it will display an error saying that it's the wrong signal. :doh:
According to someone else's info, the Recorder is capable of recording another signal type from its AV inputs (excluding the RF) only if the recording starts before the external source is connected up, however this is still impractical as you will not be able to set up timers and having to disconnect an external source each time your plan to make a recording will be impractical. NTSC Cable and over the air transmissions use a completely different and incomaptible signalling system to PAL. See this link for more info.
As PAL to NTSC conversion boxes are either of poor quality or very expensive, I am not sure if there is any way of making any practical use out of the recording features.