Hi – I believe if you shoot in standard 24p, you will still capture and edit your footage with the DV-NTSC setting, which is a 29.97 timebase that will also work with 60i footage. If your using FCP to edit, check out Ken Stone’s Final Cut Pro website for more info. I was in China 3 months ago shooting inside a toy factory under horrible fluorescent lighting, and I used 30p with a DVX 100 – the footage looked fine under those conditions – not breathtaking but certainly usable for broadcast.
Good luck!