Mac OSX 64bit

Dear all,

Just installed Python 2.7.2 on my Mac running OSX 10.6. Installed
numpy 1.6.1 and scipy 0.9.0 both from the dmg's downloaded from scipy.
Just tried to install matplotlib but there is no 64bit dmg available.
Tried installing from the egg instead, but that doesn't help.
Am getting
ImportError: dlopen(/Library/Python/2.7/site-packages/matplotlib-1.0.1_r0-py2.7-macosx-10.3-fat.egg/matplotlib/,
2): no suitable image found. Did find:
no matching architecture in universal wrapper
Trying to build from source but failing desperately. Help, please?