Problems installing DSL library

[moonraker808]

When I try to install the DSL library I keep getting this message.
enviroment is out dated
and when I compile it, this is what I get.
Compiling...
dsl.cpp
d:\Visual Studio Projects\eviroment run time\dsl.cpp(1) : fatal error C1083: Cannot open include file: 'SDL/SDL.h': No such file or directory

Build log was saved at "file://d:\Visual Studio Projects\eviroment run time\Debug\BuildLog.htm"
eviroment run time - 1 error(s), 0 warning(s)

Does anyone who uses the DSL library with their visual basic C++ know how to fix this problem?
Here are the links:

http://www.libsdl.org/download-1.2.php

http://lazyfooproductions.com/SDL_tutorials/index.php

 

[xwb]

Click on Tools/Options... Directories tab
On the dropdown box, select include
At the bottom of the list, add the path of your DSL header files.

On the dropdown box, select library
At the bottom of the list, add the path of your DSL libraries.

Close Dialog box, Exit Visual Studio (to make sure it saves). Restart Visual Studio, load your project and it should build.

Alternatively, add it into your project settings under additional directories for includes and additional directories for libraries.