Bill! You sir, rock, the laptop saved the day today, at least I think so, they're still copying. Sorry for being cheeky and keeping it, but I'm hoping the results from two hours of observing and shooting tonight will be some excuse at least!
So tonight is counted as a win for me so far. Will do some frame stacking now and post again with results!
Holy crap!!! I got the Spot!!!! Here's the first one, from the Lumix (laptop ran outta juice) .. 3 frames, stacked in RegiStax 5, then tweaked in Photoshop.
And here's the best of the full frame shots:
That's Jupiter (see the spot?) and the moons are (from Jupiter outwards) Io, Europa and Ganymede, at least that's what Stellarium tells me :)