Making a Favicon

I was looking for some information on favicons (those little images that can appear before the http:// bit in the address bar) as I wanted to put one onto my main site. I found a great website that not only offers an online facility for turning any image into a favicon, but also takes large images and splits them into smaller parts, gives you all the html you need to place onto your webpage so that they load and appear in the right place.
Timesaving, and even better - it's FREE!!