Uninstall IE7. And/or tell what website and what video doesn't work and what player version is on your computer that it is trying to use.
I am running XP with SP2 and IE7 and ZA 7.0.
I enjoy watching various videos online but don't want to download them to my laptop. I have updated Flash, Quicktime, Java, etc. all the ones I know of. I even downloaded some codecs package but to no avail.
I had been able to view videos from the various sites but now many don't load. They will changes screens and go to a player but never load.