problem on Suse10.2 with 2 GeForce cards

I have 2 NVIDIA cards on my machine,
I have Suse10.2 installed and under /dev directory i have the following files:
crw-rw---- 1 root video 195, 0 2007-04-13 10:41 nvidia0
crw-rw---- 1 root video 195, 1 2007-04-13 10:41 nvidia1
crw-rw---- 1 root video 195, 255 2007-04-13 10:41 nvidiactl

I could install the diriver and the SDK and SDK building process was successful, but when i try to run any of the examples’ executables I get the following error message:

NVIDIA: could not open the device file /dev/nvidia1 (Input/output error).

HW: GeForce 8800 GTS (GPU 0)
OS: Suse 10.2
Driver: NVIDIA-Linux-x86-1[1].0-9751-pkg1

any Idea??