WILL *insert lens here* FIT MY CAMERA
First find out the lens size (usually 37mm) than you need to find out your cameras thread size. You can do this by looking at the lens of your camera, there should be some text around it. Look for a O with a slash though it, next to that it should say a number usually 37, 30.5, 30 and somtimes in the 20s. When you find that, you need to buy the appropriate step up ring so the lens will fit the camera - so if your camera has a 30mm mount and the lens is 37mm, you need a 30 to 37 stepup ring. You can buy them here -
http://www.bhphotovideo.com/bnh/controller/home?O=NavBar&A=search&Q=&ci=420