Thanks for the helpful information. I witnessed SRP work while trying to install HP Printer Control so at least the temp path keeps executables from running there.
I think I will try out Crypto Prevent. Seems much easier than SRP.
I do have HitmanPro.Alert installed but it is not the one for Cryptolocker. I will install it once it comes out of beta.
I also had Corrine mention to show known file extensions which will allow a user to view the extension before opening the file. Extensions such as <filename>pdf.exe more than likely are going to be bad news.
Thanks