The good news is that it’s apparently very similar to IE 6.
But naturally the names and locations of some items have changed.
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In Internet Explorer 7, hit the Tools menu,
Internet Options menu item, and you should see something like
Underneath Browsing History, click on
Delete and you’ll get this:
Obviously there are many things you can delete here. If you’re looking
specifically to clear the searches that you’ve entered into the Google home
page, then click on Delete Forms…:
Hit Yes and you’re done.
Note that this will clear auto-complete entries from all web forms, not just
the Google homepage.
And there are still several other places in Windows that remember things for
you – I’ll refer you to that previous article: How do I delete
history items from my Google tool bar? for more of those.