ATmega8 +dogm128 problem

Hi!

I'm trying to connect a DOGM 128 LCD display
( http://www.lcd-module.de/eng/pdf/grafik/dogm128e.pdf ) to my 
microcontroller, but is doesn't do anything. I followed everything 
written in the document but there is something wrong. I connected it as 
shown on the first application example, with a single 3.3V supply, and 
i'm using the SPI interface.

CLK->PB5
SI->PB3
CS->PB2
A0->PB1

I tried everything but is doesn't works. If there is somebody who has 
some experience with this type pls help me. Some C code or what i 
connected wrong would be helpful.

thanks.
Z