How do i get the voice imprint completed for Star Wars Knights of the Old Republic for XBOX?

It sounds like you're playing Star Wars Knights of the Old Republic 2. To open the hatch in the first section of that game you'll need to speak to the maintenance officer droid, on the maintenance level. Speak to him and learn that he can mimic voices. Then go into the next room and you'll find a voice imprint sensor. Speak to the droid again and get him to say the codes. Then head over to the hatch and use the voice imprint sensor, and the hatch will open.