Please help an idiot

I’ve been browsing through the posts searching for help with my particular problem.  Many people are looking for help in recovering images that were deleted, but I need help in deleting images that were saved.

Long story short: I was trying to save some images to a flash drive, so I created a desktop folder and moved four images (RAW) into it.  Instead of saving the folder to the flash drive, I saved them to my 8GB Extreme III card.  I’ve tried everything I can think of (formatting the card, trying to delete them with the camera and computer, etc.), but I can’t seem to delete the folder or photos from the card. 

Any help would be greatly appreciated.