Update: As Stefan pointed out, you will not need to do the following if you have VS2005 or above. As usual, if it ain't broke, don't touch it.

If you're using TortoiseSVN for version control and are thinking of integrating it with Visual Studio either through VisualSVN or AnkhSVN, you will need to change its working directories from .svn to _svn. This can be achieved from the TortoiseSVN settings.

If you have existing checkouts using .svn, there is still hope. You can execute a batch file containing the following to rename any existing checkouts that you may have from .svn to_svn. It will do this for all sub directories under the root directory of your checkout.

@echo off

call :recurse .

goto :eof

:recurse

for /d %%d in (*) do (

    pushd %%d

    attrib -H .svn >nul 2>nul

    ren .svn _svn >nul 2>nul

    attrib +H _svn >nul 2>nul

    call :recurse

    popd

)

goto :eof

What I do is create a file called renameSVN.cmd and place to file under an existing PATH. This way I can call the batch file from anywhere.