Why is it I can never understand the syntax mentioned in VBA Help?

I'm trying to use send keys at the moment and VBA help says as an example to
press Alt-F-X

Application.SendKeys("%fx")


So when I try and use Alt-F4 to exit WinAmp I type the code:

C:\Program Files\Winamp\winamp.exe.SendKeys("%{f4}")


and the moment I move to another line it comes up with the error message:
"Compile error: Expected: line number or statement or end of statement" and
it highlights the first "backslash \".

Judging from other code experts on this site have taught me, I would have
guessed "speach marks" should go around the path to the application, but that
doesn't work and VBA help doesn't suggest it.

Thanks in advance

Phil