I have a file that has a "plus" symbol next to it so Dreamweaver only wants to add the file to the repistory. There exist no way to "Retrieve" the current version of the file (even though it does exist in the repistory). I have discovered from before that I can only re-download the repistory from the root level of my site definition, I have had no luck with inidvidual folders. Even if I could obtain the individual folders, I fear that it will over-write my local changes to use the data from the repository instead.
Does anyone know of a trick where I can modify the files that Dreamweaver uses for SVN control?
There are many problems in using the built in dreamweaver subversion, (including the one you mention) and many people have moved to using tsvn - the extension can be found here - http://code.google.com/p/subweaver/.
The documentation for CS5 indicates improved support for svn, (just for info).