Scroll down to the bottom of the page to choose your language and 32bit or 64bit version.
Will not upgrade an XP loaded PC, needs to be clean install.
There is no 'XP or Vista Classic Look' in this release, and probably gone forever.
I did find a 3rd party vendor that does a bang up job to replace the whole menu system, but I lost the link, so you will need to search for it if you want something besides what Win7 offers.

http://www.microsoft.com/windows/win.../download.aspx

Welcome to Windows 7 Release Candidate (RC) testing. We're on our way to Windows 7, and if you like trying out pre-release software, now’s your chance. You get to see what's coming, and we get to see if our changes and fixes from the Beta testing are working correctly.


How do you test the software? You put it on your PC, and then do what you'd normally do. Your PC will automatically and anonymously send our engineers the information they need to verify the fixes and changes they made based on the Windows 7 Beta tests.