Microsoft seem to have been making it harder to personalise the search engines used by the IE search box. There is a process for adding any search engine but it doesn’t seem to be as easy to find as it once was.
To add a new search provider, simply click on the link below and follow the instructions:
You can make any search engine the default option when it is added – by ticking the ‘make default’ box – or by the following process:
Click the little arrow by the search box and choose ‘Manage Search Providers’
Clicking on your chosen search provider
Then finally click the ‘Set as default’ button