In this tutorial, we learn how to change your logo image in Joomla (1.5). First, clear out the cache on your web browser and load your logo onto Joomla. Now, open up the CSS file of your logo, and you will be able to see the template information listed. Change the font size or color, depending on what you want it to look like. After this, save this as a new file, then refresh your page to make sure your logo looks different on your website. When you are done, your new logo will appear and you will be able to change the dimensions of your logo at any time.