jamyskis: Unlike Georgia apparently, we do have working internet.
StingingVelvet: It's about not taking my gaming PC, not internet access.
But surely you have a laptop that runs Half-Life 2 to some satisfactory degree. Even my 2008 budget laptop manages HL2 at medium settings at 30fps, and I would expect that Black Mesa will exact similar demands on your hardware.
Elmofongo: Do i need half life 2 or is it a stand alone game?
As I understand it, you need a game that provides the Source SDK with it. That's basically any Valve Source Engine game that is not the standalone Half-Life 2 Deathmatch or the Portal demo.
Of course, it's good and possible that Valve will choose to distribute this with a standalone Source licence.