Using the wonder of Google, I was able to find the 'official' software for my machine, the Resmed S9. The S9 is a wonderful machine, but their software seems to be written for Windows 95.
I thought that somebody other than me had to provide the report, so I got together with the shop that sold me my machine and we spent an hour before we could get it to generate a usable report.
Since then I've been told that pilot generated reports are acceptable. I hope so, because I'd prefer to use Sleepyhead to generate the required usage report.