It’s easy. First, use a straightened paper clip or something similar to open the tray (there’s a small hole in the drive front for that purpose). Slide the tray front up and off (you can see how it’s constructed by looking at the replacement tray front). Slide the new front on until it snaps into place. Then close the tray.
The drive faceplate is held by catches at three points: each side and either the top or bottom. Use a screwdriver or something similar to push the catches in one at a time, and pull the faceplate off the drive a little at each point until it’s completely released and can easily be lifted off the drive. Then attach the new faceplate, snapping it into place at all three points. [I]Voila[/I]!
Then install the burner in your computer.