Add a bmp file into Ribbon for button icon

I made up a bmp by myself for a Ribbon button.In resource view, the bmp file displayed normally.But When I open it in images collection. it display nothing.Step 1: Using PS making a bmp file with 288*32 pixel, add 32*32pixel bmp file into the previous file. then save it with bmp file.Step 2: Add the 288*32 bmp file into the VC 2010 resource.Step 3: Add a new catetory.In the catetoty property. import the 288*32 bmp file into the catetory from Large images.Step 4: Add a new button into the new catetory. set the button property like this: always large : true;Step 5: In the button property, Large Image Index, open .After the step 5, you can see the 288*32 bmp file was splited into 9 seperated 32*32 . and the image is blank.What should I do can make self-image loaded into the ribbon button.

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