Adobe doesn't want anyone to use older versions of CF. Mostly because they lose money, but also because the older versions are not as robust or secure as the current models.
HOWEVER, there is a CF repository, personally maintained (not by myself), that should have what you are looking for.
I would have set the link directly to CF7, for you, but work is blocking the shortened-url site so I can't actually get to it. Let us know if this link doesn't have what you are looking for.