XP is, and has been for a year or so, available and fully supported by MS from DL on the web.I have had subscriptions to MSDN, so I know about being able to download software from Microsoft. However, that is certainly not free.
If Microsoft is providing free, legal downloadable copies of WinXP and/or Win7, please be so kind as to provide a link. I would find that very useful.
The OS commented upon is WinXP. Nowhere in the comment do I say it is available from MS or a MS website. Perhaps, I did not state this in a clear and easily understood comment.
What is said, is that MS supports any WinXP OS system by way of updates from their web sites. If a person has WinXP on their computer they can DL updates for thei OS from MicroSoft at the MicroSoft support website. Micosoft Windows Update...its best to use Internet Explorer to do this.
I hope this clarifies.