130484 osCommerce / SSL

Hello, We have an osCommerce based website. We have an SSL certificate that was purchased for domainname.com. However, during checkout, the site pulls information for [login to view URL] . Because of this, some browsers, such as IE7 view this as a certificate security error stating that "The security certificate presented by this website was issued for a different website's address." We need for someone to update our code/script to fix this. Thanks