Assume that you have a directory under subversion control, that contains some files and tons of subdirectories, like that:
file1.txt
file2.txt
file3.txt
dir1/
di
For anyone who comes across this later, and uses TortoiseSVN, here is how to do the same thing...
(Note: This was done with TortoiseSVN 1.7.5, and may vary for other versions.)