Login, click on your Admin Tools, and download the SOLIDWORKS Task Pane Add-in from the "Things to do..." menu.
Select your operating system. If you're unsure of which operating system you're running, see this article.
Once you have completed the installation, you will need to log into the Add-in with your SolidProfessor username and password. The Add-in will look similar to the screen in your web browser. You have all the same functionality in the Add-in as you would from your web browser: