Do you mean NOISE or are you referring to the GRUNGE look ??
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"Using or working with IE is like having to wear a 1970's polyester suit with pantyhose and a girdle, to work everyday" Carolina Corvette Club
its not exactly noise... more of a scratchy/grunge feel, umm you can make grunge brushes yourself.. but you can also download some at www.deviantart.com (search grunge brushes) and just pick the eraser and choose the grunge brush and brush over the areas u want to dissapear like that (i prefer using layer mask, incase you dont want to remove parts of your image entirely, and it is editable)