How to limit one file at a time in one folder

[Baltar]

Hi. I have a folder with some deligate data. If, im administrator, how can I put limitation on that folder so that I can only delete one file at a time? And if I want to delete the entire folder so it will not allow me to delete it untill all files in that folder are deleted one at at a time?

The point is that i do not accidentaly delete this folder while files are in there and when I am inside the folder that I do not accidentaly delete all the files in the folder

 

[logicearth]

...Don't accidentally delete the files or folder...
...Keep regular backups, Previous Versions keeps a backup of its own too.