Installing Blender in Mac OSX 10.6.4

Newbie here trying to learn using Blender.

I am trying to run Blender under a Mac Mini (Nvidia Geforce 320M with VRAM 256M)
It is running OSX 10.6.4 and Python 2.6.1

I couldn’t find a version under Blender download page that match my system.
I have downloaded the stable version of Blender 2.49b for OSX 10.5 and Python 2.5 instead. When I run it, it complain there is not enough VRAM (Need at least 8M).

Wonder if there is other place I can find a compiled version that match my system. Or do I have to go the hard way to compile the source on my system?