Just a quick oversight. Nothing major.
When using Spaces like " " in Commands, you must put them in quotation marks otherwise the system reads it as a new line (or some such).
Here is the command you need;
junction.exe "c:\Program Files (x86)\Microsoft Visual Studio 11.0" "d:\Programs\Microsoft Visual Studio 11.0"
As you can see each file path is encapsulated with Quotations making it read as 1 line.
You should be good to go now dude!