To install Zen cart, login to your web hosting control panel. Scroll down until you see a section called "Pre-installed Scripts Collection". Click the "E-Commerce" icon and enable the Zen Cart shopping cart.
To access your Zen Cart administrator's console and setup your store, log back into your web hosting control panel and click the same icon as above. Then, click the "Zen Cart" link under "Online shops".
The username is "Admin" (use a capital A). When you installed Zen Cart, you were asked to choose the password. If you have lost your password, click the "Resend Password" link. The email will be delivered to the email address you provided in the install step.