Usability problem on clicking Register

I've done some usability testing on users and have found that many are confused by the register button on the main page. When they click this, they expect to be taken directly to a signup form. However in our design, we show the details page with a register panel open.

Only problem is that the panel is not noticeable and if on the right and most likely below the scroll area.

I know we changed our original design to add a register button, however I think we need to rethink where the register button takes you.

One idea is to redesign the details page so the form is on the left. Or change the name of the Register button to Details.