Yes you can make yahoo your homepage on your control panel but it is difficult to do.
For the Firefox browser, Go to tools. Then click on options. You should see a tab that says, "Main" then it says homepage:.... You will then type www.google.com . Then your homepage should be set to...
Click the button that says " Make Yahoo! your homepage" then wait and if it doesnt work then click it twice!!
475038496748378298473777788238384 that's how many
Google is way better than yahoo.