Jay, A few years ago when residing in Auckland, New Zealand, I co-wrote a feature screenplay with another writer then resident in Sydney. We wrote it in the form of a treatment, as this allowed us to put in entire scenes as one-liners and then expand them (right down to some of the dialogue) as we progressed. We wrote it in a Microsoft Word document which got sent back and forth by email. I made my changes in blue while his were in red. This allowed us to easily see the latest revisions. Once a set of revisions was agreed all the text was set to black and we started another 'lap'. There were also phone discussions at various times. The most important rule we made was that both of us had a complete veto over everything the other writer contributed. This sounds draconian but I regard it as absolutely essential. As soon as there are parts of the story you don't agree with but you're allowing them to stay -- either because you don't want to antagonise your co-writer or because you are letting them keep them in, in exchange for the bits they don't agree with -- your feature is dead in the water. In my experience, 99 of the time a disagreement is a sign that both writers are off the mark and when you get the story exactly right both of you will know it. It's also important to recognise that both writers will most likely not make equal contributions. One writer may be more prolific than the other. One may be stronger at characterisation, etc. In our case my co-writer was very good at zany ideas but I had the task of beating them into a meaningful whole. The result of all this was a treatment that ran to over 50 pages. Writing the actual 90-page screenplay off it was a breeze. You may wish to think about only having one of you write the finished screenplay as if you both contribute it may have a slightly schizophrenic feel to it unless your writing styles are congruent. Also don't forget to have a signed ownership agreement up-front. In my case the project was successful as the screenplay secured me an agent. Best wishes, Mike Hallett www.micafilms.co.uk