Do NOT attempt to install Internet Explorer 7 in a PC that has ZoneAlarm on it. It won't work.
Trying to stop ZA doesn't help. It just makes all your actions "go on walkabout."
To remove ZA, you must start in "Safe Mode." Either uninstall or drag its folder to the trash.
Does my C++Builder work yet? Nope. Dunno what bolluxed it, but I wasn't having this problem before IE7.
Checking the disk is a painfully long task, too. Bah!
More later. argh.
More: So, I've tried to uninstall IE7. No love. Reinstall IE6? No skittles. Fix C++Builder installation? No va. Reinstall C++Builder? Na da. Fix Win XP? No nothing.
Oh, and I have now heard other evidence (anecdotal, by definition, of course) that IE7 is pretty much a Vista(tm)-only thing (Microsoft auto-installer advice notwithstanding). :^/ A co-worker's son, also a programmer, had his system buggered by it.
Later (11:24 14NOV06): Almost everything successfully reinstalled. C++Builder still a non-finisher. Will have to go back to files few days old and take a running start at it. Hmmmm... *sigh* At least I fixed one thing.