To summarize the current state of affairs:
On a new Apple Mac with OSX 10.7 (Lion), the 10.6 binaries of AFNI can be installed using the instructions found at
[afni.nimh.nih.gov]
with a few modifications.
Xcode can be downloaded from the App store instead of the web site listed in the instructions.
The step
sudo fink install glib glib2-dev netpbm openmotif3
will fail and should be changed to
sudo fink install netpbm openmotif3

After these steps are performed, AFNI and most programs in the AFNI package should run fine. However, SUMA will not run, because it requires the glib libraries and these are not currently available for 10.7.