I have a fairly new HP Vista. I was using IE7 on it, but then IE8 came out and I upgraded. Suddenly my yahoo mail wasn't working. I called my ISP, and found out that they don't support IE8 yet. so, by Hobsons Choice, I had to install Firefox. Slowly I'm learning how to use it, but there are things that I could do without thinking on IE that I haven't figured out how to do at all with the Firefox. Every day I'm learning a bit more. I tried Chrome, but it really wasn't for me. So the learning will continue.