C++ error

I'm going to write a hack and if I want debugen there is an error!
How can I fix this?

German: 1>LINK : fatal error LNK1104: Datei "d3d8.lib" kann nicht geöffnet werden.
English: 1> LINK: fatal error LNK1104: File "d3d8.lib" can not be opened.

Thanks

You have to install the SDK.