It depends on the browser. In Chrome or Chromium, go to the wrench icon at
top right, choose Preferences and set the home page in the new windows on
the line that says Home Page. In Firefox go to the menu and look under Edit,
Preferences and click on the General tab, top left. Then type in your new
home page or cut and paste. If you navigate there before you set the home
page you can click on use current. Handy. In Opera it is in the menu under
Tools, Preferences. In Rekonq you click on the wrench at the top and at the
top click on General and go to Home Page url. In Konqueror it is in the menu
under Settings, Configure Konqueror, General.

So many browsers. So much fun! I often have 3 or 4 different ones open at
once.