c:\windows\folder.exe with .exe\our.exe prog.com -par1 /param2.exe

##</code><code>##

c:\windows\ -folder
folder.exe with .exe\  - folder with blanks in his name
our.exe prog.com  - the program with blanks in his name
-par1 /param2.exe -parameters

##</code><code>##

=~/(.+?\.\w{3})( +)(.+)/