Since Iíve had a lot of difficulty understanding Win 7 file names and paths, when I found this writeup I thought other Win 7 users might also find it helpful. The URL for the location of this information is:

http://msdn.microsoft.com/en-us/library/aa365247(VS.85).aspx#file_and_directory_names

(To follow the link press CTRL + click)

The info about paths is about half way down from the top.

Note the screen on the left of the display has a LOT of references that you might find useful.
HTH, Sid