Put this one in your utilities scripts to include when needed:
Sub Run(ByVal sFile)
Set shell = CreateObject("WScript.Shell")
shell.Run Chr(34) & sFile & Chr(34), 1, false
Set shell = Nothing
Then to use it include the script and call it as follows:
' Execute the file MyFile.exe
Run "C:\Program Files\MyFile.exe"
Or, use it to execute a file in the app that is registered to handle files of that type:
' Open the file MyFile.doc in Word
Run "C:\My Documents\MyFile.doc"