Rename utility with picture preview

I want a simple tool that should work like a picture browser and filename editor. What the tool should do: 1. User specify a path to pictures. 2. The tool show the first image and show under the picture 2 text fields (old filename, new filename) 3. The input field for new filename should automaticly selected for entry a new filename 4. With "enter", the filename should be changed and the next picture should be loaded. 5. Repeat until last file in folder reached. Its a very easy project, so the budget is really low.