This is not game related, but hopefully I can prevail upon the good graces of the resident experts: My default search engine somehow has been changed to Yahoo!7, which is an australian search engine. I want to change it back to the standard US version Yahoo! search engine. Can anyone help?

It depends on which browser you are using. Usually there is a drop-down menu from which you can choose your default search engine. In Firefox, it's a small down arrow in the search box.

Thanks for reply...Im using IE9, Yahoo home page. When I enter a search string and hit "search" the search engine changes to "Yahoo 7" which is Austrailia Yahoo, and does a search within Australia. There is no drop-down arrow to specify search engine.

Does this help?
http://www.howtogeek.com/howto/29084/add-google-as-your-search-provider-in-ie-9-beta/

Wow, that's cool, Jenny! I just added Google to mine. I seldom use IE, but I never knew how to do that.