I just installed Visual SVN server and visual SVN and got a message that I do not have tortoise SVN installed so some features are not available.
Why do I need tortoise SVN?
edit0:
From: http://www.visualsvn.com/visualsvn/download/
In order to setup VisualSVN you should download and install TortoiseSVN. The current version of VisualSVN is compatible with any version of TortoiseSVN 1.6.x (excluding nightly TortoiseSVN builds numbered as 1.6.99.x). It's recommended to use the latest stable TortoiseSVN 1.6.9 build.
So WTF does VisualSVN Server work with ?
VisualSVN Server is Subversion server with management tools and additional modules, such Windows authentication and authorization. You can use any Subversion client to work with VisualSVN Server. Subversion command line client (svn.exe) is already included in VisualSVN Server.
TortoiseSVN is Subversion plug-in to Windows Explorer. It's open-source product.
VisualSVN (Client) is Subversion integration add-in to Microsoft Visual Studio. It gives you ability to work with Subversion without leaving you IDE. VisualSVN (Client) uses TortoiseSVN for most commands. That's big benefit of VisualSVN (Client) since you get the same Subversion UI in Visual Studio as in Windows Explorer.