Just before Christmas, I came across this neat post about deleting SVN folders. It’s just this little registry entry that appears when you right-click a directory, and will recursively go through and delete the .svn folders.
I took that, and created another little script to delete Dreamweaver’s “_notes” folders in the same manner.
Just unzip the files, and double-click it to import it into your registry. You can use the features immediately, without restarting (at least with XP).