Note that you cannot delete the Index.Dat file since the O/S has conveniently locked it.
I did check it out and your right. But why lock it? And why do I need it? Who is going to need those files? Is microsoft coming to my house to say "Hey, how about those files?" If it served a purpose, like running a program, I'd say keep it. But I dont think its needed.Hmm Your right Jim, it does make me wonder.
ps, I did download IE7. Were is the hype? Actually, it almost looks like they took some features away. Even though they didn't.