Nvidia Opengl 1.3 drivers for iMac G4

Hi I recently bought an iMac G4. I use DAZ Studio and Poser 6 to do 2d to 3d graphic design. According to the system profiler the Nvidia Geforce 2MX specs are as follows: Display Type: LCD
Resolution: 1024 x 768
Depth: 32-bit Color
Built-In: Yes
Core Image: Not Supported
Main Display: Yes
Mirror: Off
Online: Yes
Quartz Extreme: Supported
So what I want to know is, according to DAZ Studio, my graphics card doesn't support Opengl 1.3 and I need to update the drivers. I have tried for awhile now unsuccesfully, to find driver updates for my card including the Nvidia website which offers no support for my card. Any ideas? Thanks!!!