Internet Explorer (IE7) provides functionality to open new tabs with in the browser. On opening a new tab if you want the IE to display your home page instead of about:tabs page, then the following needs to be done.
Click on Tools -> Internet Options and in the general tab click on the settings button under the Tabs section.
This should open the Tabbed Browsing Settings dialog box. Under this, check Open home page for new tabs instead of a blank page.
After doing these change, and if the new tab still shows about:tabs page, then make sure to check the Don’t show this page again option provided at the end of the displayed page.