lilypond not recognized

[address@hidden]

After solving a mysterious hardware problem I finally got my Windows 7 box up 
and running again.  I installed LilyPond 2.16.2-1 but it won't run from the 
CLI.  I get:

'lilypond' is not recognized as an internal or external command, operable 
program or batch file.

I have, in fact, edited the PATH to point to the /bin directory which contains 
LilyPond.  I don't ever recall having this problem before.  Before I had my 
recent computer problem I am sure that Lily was installed and working just 
fine.  The 'drag-n-drop' method works, but I would much rather use the CLI.

Help?

-David