DS tutorials

I would like to use DS to teach an introductory class to a small group of our graduate students. Though I have used InsightII for many years we do not have but one institutional license available, so I must use DS where we have sufficient licenses - BUT: I have a tutorial for homology modeling, the first page directs the user to open the tutorials directory and open virtual-pharma-sequence.pir - there is no file I can find by this name and I do not know where to find it, or perhaps something else that is suitable. Where to go and what to get??
- P2