Internet Explorer 6 defaults to a high privacy mode concerning cookies.  Cookies are used by E-Commerce software to keep track of your order.  IE 6's default settings blocks session handling cookies and must be changed for the software to complete your order.  Otherwise, when you attempt to checkout, you will be redirected to the Search page.

Instructions for changing cookie settings in Internet Explorer 6

Click on the "Tools" pull down menu

Click on "Internet Options"

Click on the "Privacy" tab

Click the "Advanced" button

    Check the boxes for the following items:

        Override Automatic Cookie Handling

        Accept First Party Cookies

        Accept Third Party Cookies

        Always Allow Session Cookies

IE 6 will now allow session cookies