Adding a favicon.ico to SharePoint
So your site is sexy.. at least you think so.. but something is missing, you need to add that little extra to make it really WOW. Well that little can be a simple little favicon, you know, that little icon on the top of your browser. Here are some steps if you want a nice little icon.

Quick note: navigate with your browser to the favicon to make sure it is uploaded correctly, ex.http://your.si.te/_layouts/images/favicon.ico
Download a good icon generator, you are only as good as the tools you use.. Don’t believe me? Try drilling with a butter knife. The best I have found is free and called IcoFx you can grab it here http://www.icofx.ro/
Import the image of your choice, chop it a bit, check your opacity and you are good to go. Now save the little bugger, ideally give it a generic name like favicon.ico
Now if you are using:
SharePoint 2007 add this HTML tag for the favicon to appear:
<link rel=”shortcut icon” href=”/_layouts/images/favicon.ico” />
SharePoint 2010 there is a special control for adding favicons:
<SharePoint:SPShortcutIcon runat=”server” IconUrl=”/_layouts/images/favicon.ico”/>
I am assuming that you have checked out your Master Page in order to make the change, so please remember to check-in, publish, and approve your Master Page so that everyone can see the change.
Refresh your site, depending on your browser this can take some time and there are ways to make it quicker. Firefox and Chrome are pretty snappy with favicon refresh, IE caches like a monster so expect it to take some time.
You should see the favicon.. tada. Nicely done
The Lazy way (My favourite)
take favicon.ico..
Navigate to <root>\inetpub\wwwroot ..dump it here
Navigate to <root>\inetpub\wwwroot\wss\VirtualDirectories.. choose your port folder and dump it there
Not even its mother will support this method, but it is quick and dirty and only needs an IISReset to work..
Adrian