One of the very first things we all do in a new Joomla installation is change the default Joomla logo. When you are still a Joomla beginner, this might be a bit of frustrating task, especially when you still have no idea what templates are, and how to changing template.

First Way:

1. Upload a new image named logo.png using FTP software (we recommand using FileZilla)  to /templates/rhuk_milkyway/images. When prompt for replace, click Yes.
 Done. The site logo is changed

Second Way: (If you don't want to overwirte the default logo image)

2.  Go to Extensions>> Template Manager  click on rhuk_milkyway link and then click on Edit CSS; Edit template.css
3.  Find the following CSS entry: div#logo,  The full CSS entry is:

div#logo {
    position: absolute;
    left: 0;
    top: 0;
    float: left;
    width: 498px;
    height: 75px;
    background: url('/../images/mw_joomla_logo.png') 0 0 no-repeat;
    margin-left: 30px;
    margin-top: 25px;
}

Change the line: background: url('/../images/mw_joomla_logo.png') 0 0 no-repeat;
to

background: url('/../images/<name_of_image>.png') 0 0 no-repeat;  <name_of_image> = the name of the filename of the logo you have just uploaded.

3. Change the width and height entries in the to the width and height of the new logo you uploaded.

4. Save the CSS file.

Done. The site logo is changed