You will have to upload a folder and file into your website. To do this, open an FTP client and drag the /lite/ folder and the "styleswitcher.php" file into the same directory as your /textpattern folder (or where ever your index.php file for your Textpattern blog/cms is).

Open up the Textpattern admin page. Click on presentation.

Copy and paste the following into the textarea:

Click on archive. Copy and paste the following in the textarea:

Click on error_default. Copy and paste the following into the textarea:

Click on forms. Copy and paste the following into the textarea:

Click on comments. Copy and paste the following into the textarea:

Click on comments_display. Copy and paste the following into the textarea:

Click on comment_form. Copy and paste the following into the textarea:

Click on Links. Copy and paste the following into the textarea:

Click on search_results. Copy and paste the following into the textarea:

Click on style. Copy and paste the following into the textarea: