No such clips found on my early 2008 version.

The tape is black (as in the photo) not orange (well it was on mine). Just in case you were looking for orange tape.

As an addition to xtian's note, the bracket that you need to slide right (and a spudger is very useful here) it may be because the rear right (as in the picture) of the optical drive needs to be GENTLY pushed down as the bracket end needs to slot into a hole on the right hand side of the case.

My early 2008 MacBook was the same. 2 x 4mm in the outer and 1 x 3mm in the centre.