I will show you how to use facebook chat without launching facebook. It makes it more Instant message like. It can also be used for the yahoo web messenger.
Step 1: Step One
You will need to download prism mozilla from http://prism.mozillalabs.com/ make sure to download the standalone application.
Step 2: Step 2
Extract prism to a directory that you can locate. Run prism.exe and you should get a diolg box that looks like this one.
Step 3: Step 3
Enter https://www.facebook.com/presence/popout.php In the URL field and name it anything you wish. Make sure you check the desktop and or the start menu so it will save the link. Also you can put http://webmessenger.yahoo.com/ in the URL if you would like to use the yahoo based web messenger.
Step 4: Step 4
Launch the link and login. You will get an error, just wait and it will go away. Then you should be logged in. Also make sure you don't have another instance of facebook open.