strange noise

[atomicpulse]

this just started within the last two weeks. when i start off in first i get this weird rattling noise.. and it continues when i switch into second.. then for the rest of the gears its fine.. now i could be wrong but it sounds like its coming from the front of the engine. any one have any idea what this could be? i have a 2000 integra thanks

[bird2431]

I would say it is probably a heat sheild