I assume you mean, how do you set IE7 as your default browser?
If so, open IE7 and go to Tools > Internet Options > Programs tab and click the "Make Default" button in the "Default Web Browser" section.
The Evil Within 2 review-in-progress
Adobe shows still-in-development tools, including automatically colourising black-and-white photos
iPhone X news: Release date, price, new features & specs
Comment transformer un iPhone en borne Wi-Fi ?