well, actually there is no way
but some filemanagers like Nautilus for example (and Konqueror too I think), if not set otherwise, tend to hide every file ("folders" are actually files of one kind too, so they too) that begins with a dot, like
the . (just one dot) file represents the current directory (by doing a "cd ." you get only back to the place you're currently in) and .. (two dots) represent the directory that's one step "up" from you - like /home if you're in /home/user. so these things are files too, and hidden because they start with (or consist of) a dot. so rename a file so that you put one single dot in front of it's name, and some filenamagers will hide it.
still: if you want to see them, there's no restrictions: hiding dot-files is only a habit, and when forced, they can be viewed with every app that's capable of viewing file names, I think
(unless some wicked coder has coded otherwise)