I run windows 7 and I am unable to set yahoo as my homepage; when I try to do so, I get the message "this address is not valid" but, after rechecking, it is the correct one I am using. I have attempted to do it, via control panel, and also from the yahoo mail homepage, with no success. I am also being advised to go into my yahoo browser settings menu, but cannot find the button which allows me to do this. Any tips would be helpful. Thanks.