Use the Magento Connect Manager to install MageLink. You can obtain the installation key from the following url:
http://www.magentocommerce.com/magento-connect/catalog/product/view/id/23008/s/magelink/
or download directly from the downloads page
Please make sure, you can install extensions that are in beta state. To make sure, please check the following setting in the “Settings”-Tab.
After successful installation, it should appear in your “Existing Extensions”-List
Go to System - Configuration and find the line that is named “Services”. Within this, you should find a new option called “MageLink”. If not, please clear the cache and try again.
TYPO3 Base URL
Please enter the full url to the TYPO3 Site
URL of the TYPO3 Login Site
Please enter the full url to the TYPO3 Site where the Login Plugin is included.
Enable Ajax Single SignOn/Off Listener
This setting enables the ajax listener on Magento. Set it to off if TYPO3 and Magento share the same domain!
Shared Key for decryption
Please enter the same encryption/decryption key, that you've used in TYPO3.
Associated website on customer import
Please select the default website, where the imported customers are assigned to, when the user source setting is TYPO3
This setting is only needed if Magento and TYPO3 are located on different servers.
Please go to System - Webservices - Roles and add a new role to create access for the webservice-user you will add later.