Copy them to a thumb drive or external hard drive.
So you're saying just C/P the folder from program files right? But how would I get it re-installed?
Sometimes that works, but chances are you will have to reinstall them.
take this as a lesson learned. save your .exe files when you install new software.
i keep a folder on my external that has a bunch of software install files so i won't have to scower the internet to find them again.