in this site, someone made all of these shaders
I tried one in blender 2.49b & 2.56 and didn’t work
how to convert to BGE?
I didn’t see any GLSL shaders on that page. In any case, GLSL scripts run from shader scripts - to implement these, take a look at http://www.blender.org/development/release-logs/blender-241/glsl-pixel-and-vertex-shaders/. It’s the older version of Blender, so you’ll probably have to fix the deprecated functions / parts. If you want to see a simple example shader, I have one. Note that Blender can’t perform all shaders, although it could also be my graphics card that is unable to perform all GLSL functions, so you’ll have to check it out.