I'm not new to viruses and I know how to avoid them. Most people will tell you to purely avoid untrusted/unknown executables and I agree of course, but for general download use I am after a program described below. This would be used on executables that have passed all virus checks and common-sense authentication checks. Just a last precaution.
It should 'lock down' a selected executable and monitor every process it attempts to do and request permission before it lets it do each action. Things like registry entries, copying/deleting/modifying files and anything else that modifies your computer.
Like Vista's UAC (a most annoying feature 99% of the time) but extended. It wouldnt be active on every file like UAC is, just on a targeted executable, or I guess putting the whole computer in lockdown while you run the file would work just as well.
Does this exist? Thanks for any help