MS has announced that Windows 7 Pro onwards downgrade is permissible to Vista and XP.
Statement given below..
"For a limited time of 18 months after the general availability of Windows 7 or the release of a Windows 7 Service Pack, whichever is earlier, the OEM license of Windows 7 Professional and Windows 7 Ultimate will include downgrade rights to Windows XP Professional. After that period the OEM license will enable downgrade rights to Windows Vista Business"
Taken from here
The question here is if we want to downgrade to XP or Vista does MS provide the media/installer CD/DVD for this?
If not then what are our options?
Of course Windows 7 does provide XP mode, even then if we do want to do a full remove and install of XP or Vista just in case.