The ScreenSteps integration is done via a Home Page Component. Home Page Components only allow HTML which means you have to manually locate the url of the visualforce page that will process requests to the ScreenSteps server.
Navigate to your home tab and look at the URL in your browser. If you are using a default Salesforce installation without My Domain it will look something like this:
Make note of the instance name. In the above example the instance name is na8.
If you are using My Domain then it will look something like this:
In this case you will need to determine your Salesforce instance by following these instructions.
Note to IE users: IE may report that an error occurs when trying to access this page. If you are using IE then just copy the URL to the clipboard and skip the step of testing the URL.
Now enter the URL to the ScreenStepsLive_Home page into the browser and load the page. If you are NOT using My Domain and your Salesforce subdomain is na8 then the URL would be this:
If you ARE using My Domain and your Salesforce subdomain is na8 then the URL would be this if your custom domain was bmls: