@Arky and others:
It's sufficient to patch the stream on time before importing into (e.g. Maestro), than import and after that (close Maestro or just the project) and immmediately re-patch the stream back to original. Maestro (and others) moan about wrong resolution only at import, they later on work with the original resolution video normally. Only one drawback with Maestro, there's NO thumbnail preview available, which is a bit hard to navigate but normal preview will work as expected (even aspect ration is ok).
Patch only the first header. Be aware when you mix different resolutions it's basically impossible to repatch the resoulation in the VOB later on. That's why we've 'invented' the immediate re-patch.
There you go, an exellent resolution patcher, PAL only, maybe we mail the author to implement NTSC and Pan Scan info, shouldn't be that difficult.
http://kickme.to/DVDPatcher
mike