Create a transparent background in a picture for the web

From: Kelly
Date: 02 Jun 2004
Time: 20:06:05
Remote Name:


I have designed a logo in photoshop (5.5) and want the background to be transparent so I can place it on any web page no matter what the colour OR be able to delete the background (so the logo will no longer be square but take on the form of the left over image or images group together).