Several weeks ago, on my two computers, I installed
Explorer 7.0 (formerly used IE 6.0.

The following morning, after the above installation,
I was unable to access my Yahool Mail account on
either computer.

On the Yahoo Mail page, a 'security lock' appears
adjacent to the IE search box at the top of the web
page.

The only antecedent action that I can recall before
the above problem surfaced was the installation of
IE 7.0.

Could this be the cause of the problem?

If so.....could I uninstall IE 7.0 and reinstall IE 6.0?

I have very limited technical knowledge about computers.

Cordially
geoheid