Path variables from system restore point, Windows 7 64-bit
Solution 1:
You can always right-click any file/folder, open its Properties dialog and click on the Previous Versions tab:
- Previous versions of files: Windows Vista FAQ
- Previous versions of files: Windows 7 FAQ
- How to Restore Previous Versions of the Registry in Windows 7
As for your specific question regarding "the little button to the right of Open for Show previous versions", he was talking about this:
Took me some time to figure it out as well; the instructions should have been clearer.