Can't Delete Files

Hi All, tried this once before but got messed up and never saw if there was any response so I'll try it again. I have 4 files that will not delete. They show up as OmniPage.jpgImage in the file type. They will not open nor will they respond to any commands. If I right click them, I get a much smaller menu than normal with only a few commands, and delete is not one of them. I have tried dragging them to the recycle bin, doing that while holding shift, highlighting them and clicking 'delete this file' in the file and folder task window,using the edit command from the window after right clicking, pretty much anything I can think of, but no luck. These things seem bulletproof. I don't even know what's in them. They have names that are so long they go off the page and they appear to be some type of adult stuff but I didn't download them, at least not intentionally. Anybody have any clue what these are and how I might get rid of them? It's pretty aggravating. Thanks, Chip