Alasdair,
The program I used was AstroPlanner. It isn't free, but most features are available in the free version. If memory serves, you'd just need the file I used and you should be away. I'll be able to post it in the morning for you to try your luck.
The program can be set for a specific time for generating charts, or can automatically update each objects location and give you a lot of information on.
Joel
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