Changing the default template of Joomla 1.5
When you find the template you like, download it to your local computer and follow the steps below to install it on your website:
Step 1. Log in your Joomla admin panel and go to Extensions -> Install/Uninstall:
Step 2. There is a box “Upload Package File” and you have to use [Browse..] to find the template file you have downloaded.
Step 3. Once you find the file, click on [Upload File & Install].
Step 4. Now that you have your new template installed, you should apply it to your site. This can be done from Joomla’s admin panel, Extensions -> Template manager:
Step 5. Check the radio button next to your new template and from the top right menu choose “Default“.
And that’s it 🙂 You have successfully redesigned your website in just 2 easy to follow steps.