SYSTEMQQ call with quotes

I'm trying to use SYSTEMQQ with quotes for the command and arguments and it doesn't seem to work.  It's OK if either the command or the arguments are quoted, but not both.

result = systemqq ( '"C:\Program Files (x86)\Notepad++\notepad++""c:\temp\new file.txt"' )

gives me the error:

'C:\Program' is not recognized as an internal or external command, operable program or batch file.

The following commands work as expected:

result = systemqq ( ' dir "c:\temp\new file.txt"' )

result = systemqq ( '"C:\Program Files (x86)\Notepad++\notepad++" c:\temp\new_file.txt ' )

How do I use this if both the command and the arguments have spaces?