need to change an invisible folder to visible

cant find any way to do this. i dont want to make all invisible files visible, i can do that with cocktail, but having found the invisible folder i want, i want to make it normal and invisible.

basically im recovering music from an iPod for a colleague. i used cocktail to make all invisible files visible, then copied the iPod control folder. i want to turn it back to normal but still see this folder.

 

thanks that worked perfect