How to mark files as safe?

I have several .exe files that I compile myself, and I know they are safe.  They are utilities that I use on my own computer.  Norton sometimes quarantines and removes them, especially (it seems) if I have a shortcut to them in my Windows Startup folder.  They get removed upon starting Windows when they would normally be loading.

If I return the files from quarantine, it just seems it grabs them right back.  How can I tell it not to?