installation Question

Hello

i read that to install black mesa you need to install source sdk base 2007 before you install blackmesa, what if i install source sdk base 2009 instead of source sdk base 2007?

will there be any problems? i do have a directx11 GPU (gtx470).
can anyone help/answer this question.

Thnx

Founded in 2004, Leakfree.org became one of the first online communities dedicated to Valve’s Source engine development. It is more famously known for the formation of Black Mesa: Source under the 'Leakfree Modification Team' handle in September 2004.