FQP = Fully Qualified Pathname
LNF (Long Filename) e.g. "C:\Program Files\Internet Explorer\iexplore.exe"
8.3 e.g. "C:\Progra~1\Intern~1\iexplore.exe"
No, you should not have to set it as I already have, (strIE = "C:\Progra~1\Intern~1\iexplore.exe"), and whether it's an x86 or x64 version of Windows the path should be the same.
All you need to do is place the startie.vbs script wherever you want, I choose C:\Windows as it's in the $PATH and was short to type. Wherever you place it just include the FQP to it (\"C:\\Windows\\startie.vbs\") as I did in the example syntax of the command line I showed.