Glass textures?

Hey im doing a map and i need some nice custom textures with glass in it and what not pre-made for hammer so if any one can point me to a pack and how to install would be cool.

Put them in source game*source game acronym\materials* i.e. half life 2\hl2\materials or half life 2 episode 1\episodic\materials.

Why not make your own textures that way you get exactly what you need.