A chap wrote to me about a scheme to obtain 'free Microsoft software'. After many many drafts, I settled on this answer that shouldn't get me into too much trouble:
Thank you for your enquiry.
The web pages of the XXX do mention the MSDN programme, and further information can be found at:
Or by contacting them directly at:
MSDN stands for the Microsoft Developers Network. It is not a source of truly free software as Microsoft is a proprietary software company and consequently do not offer their operating systems free of charge. Free software is a matter of the users' freedom to run, copy, distribute, study, change and improve the software, and proprietary software does not offer this. Further information can be found by doing a web search for 'free and open source software'. There are also operating systems available that are both free and non-proprietary.
Obviously I couldn't go into too much of a rant, but I though this seemed reasonably balanced.