Creaking problem on left side by the audio jacks

Hi,
Its been under a month since I got my macbook. I've noticed that when I push in on the left side of my macbook by the audio jacks the plastic will begin to move in quite a bit and make a creaking noise. This does not occur on the right side of my macbook. I bought it online? could I take it in to any mac store to get it looked at, or do I have to mail it in. This is my only computer and I probably cant be without it for a extended period of time. I know some other people has had simliar problems, so if you guys can share your experiences that would be great. Thanks in Advance.

Mine does that as well, I think it's normal. There's probably just no metal frame on that part. Sure it feels a little cheap, but nothing to get excited over.