Some additional information about this library/code.
This glcd library is a beta release for a new glcd library.
It is a replacement for the ks0108 library - Arduino Playground - GLCDks0108
Because the library now supports other other glcds besides the ks0108 (currently only the sed1520 is operational), the name of the library was changed from "ks0108" to "glcd".
However, even though the library name was changed from "ks0108" to "glcd", both libraries cannot exist in your arduino environment.
So, to use this library, you will have to remove/uninstall any previous ks0108 library installation from your development environment.
See the readme.txt file in the zip image and the included HTML documenation in doc/GLCDref.htm, also in the zip image, for further details.
--- bill