- Unzip the wp-contact-form-iii.zip file and upload the entire wp-contact-form-iii subdirectory to wp-content/plugins/
- Log into your blog and activate the plugin
- Go to Options -> Contact Form III to configure everything like email address and antispam question
- Create a Page or a Post where you want the contact form to be and insert [contactform]
If you're are upgrading from 1.5.x to 1.6.x you need to:
- Delete the old supdirectory "wp-contact-form-iii"
- Upload the new.