hi guy's I download alrady the glass shader from highend 3d. when I apply looks very wired, I don.t know why. and also this shader has a problem. that is what the owner said. I have to read the readme file. but the readme file is very short and nothing to do with shader. I think of the shader need do some changing in the shader. but he dosen't response to my e-mail. anyway any other idee people. the glass shader is everyone's problem. still waiting for replay, thanks for ur help every one