Hey Grif,
Method is able to create leads from your website using the Method Web Forms feature. This is located in under Customize -> Integration Tools -> Method Web Forms. The Basic Web-to-lead form will allow you to generate leads from visitors without the need for them to create usernames or passwords. They just fill out the form on your website then click Submit; you'll then see a new lead in Method that has just been created with their info.
To post the form on your website, Method will generate HTML that you will copy and paste into an existing or new page on your website. If you have a web developer, you can provide this code to them.
Sam