Mansrm, has given you a good answer. To follow up, I agree, the warning is very annoying. Remember, however, if you do not have that warning, everything will be gone, when you decide to delete. I have seen more than several posts from members who have deleted files, etc. ony to regret it. I for one, put up with the annoying warning. It is there for my protection. Of course, I want you to enjoy you Windows 7 OS the fullest and am glad that there is a method that will accomplish what you are looking for.
Take care and wishing you the best.