This is getting annoying...I did exactly as you said, and yes - it did work - only I can't get a lock on the water texture, only the textures that it touches. After that disappointment, I reloaded my map under the CSS configuration, and I was pleased to find that I could use de_chateau's textures....only the water wasn't there. THEN, I decided to try some of the level's textures anyway, so I replaced the flooring, a window and the drawbridge. When I switch the configuration back to HL2, naturally these textures didn't transport over. Is it possible to export the CS textures over to HL2? I've been searching the Valve folder and have found no copy-able files, even after a Windows Search.