Tortoise SVN 1.1.2 is available at http://tortoisesvn.tigris.org/download.html
(BTW when you install this version it will still say its version 1.1.1 build
2205 someone forgot to increment the build number.)
This upgrade is necessary to move files/directories within subversion. To
move stuff select it and perform the drag with right mouse button (i.e. the
button normally used for context menus), when you release a context menu will
popup with your options. It took me a few minutes realize what that it meant the
right mouse button.