One has an installer and the other doesn’t.
The version with the installer would only be of use to folks who already have access to at least one administrative account on their computer.
Since the original poster can’t get into any Windows user accounts he is stuck having to burn the software to a CD and then boot from it.
Either way works, it’s just that CD method takes longer.
Thank you, I was just curious. I think I will save this page for reading later, seems like a lot of great ideas are coming from here.