thanx to you all I have a part of the solution:
Shell("%comspec% /c " + $test) does it!
Thank you very much!

And do you also have a solution if there is a kix-macro in the ini-file:

@scriptdir\calc.exe

Also this one won't run.
Here I can't use the comspec-trick. @scriptdir\calc.exe has to be executed as c:\temp\calc.exe.