If you still like IE7 upgrade to IE8.
Trust me, you'll like IE8 more and switching to IE8 will preserve most of
your settings in IE7.
IE9? I'm still undecided
the adaptive search doesn't seem to work in IE9.
(The tendency for it to suggest the result of past searches)
But unless you are running an early version of Vista (which came with IE7)
you are probably running XP and with XP IE9 isn't an option.