How Do I change the 3 photos and text in K2

Hi,
Knowing Joomla I have been using your templates for a couple years with little problems but the K2 components on the home page are driving me nuts. I have searched for the 3 images and found them in the sample images folder as sample_image1,jpg, sample_image2, jpg and sample_image3,jpg. So I changed the images and uploaded them to the same location with the same file names but the images didn't change to the new images I have looked in K2 items and I do not see the placeholder text or a way to look at the html to find the image location. Can you please tell me the location of the 3 images so I can change them and can you please tell me how to edit the 3 placeholder K2 texts on the home page,
Thank you

Eater you changed images in wrong place or you simply need to refresh because images are very sticky to browser cache. Try to use different name for one of them that would overcome cache problem.