thanks everyone! to answer your question psychokitty yes you can use those pictures. I'm not too impressed as i had the iso set too high so they look grainy and bad, and i had my shutter speed too fast as it was only capturing the very beginning of the strike. My camera is too fast lol!! As for being handheld, it was on a tripod, i was sitting inside a building watching it through a window so i wouldnt get struck by lightning lol.
As for settings, i used the MdLightning6 script with all the stock settings. I used chdk to override the nd filter state to close it so the screen would be darker when it was detecting, thus seeing the bolts better (these were mid day shots). Then i just brightened them back up in photoshop.
I cant wait until next time now that i've figured it all out :-D