afni.nimh.nih.gov

For others benefit, I used Colm's command:

awk 'BEGIN { FS = "," ; RS="\r" } ; { print $'$j'}' > $i.$j.1D

on a file saved as a MS-DOS .csv file in Excel 2008 (for Mac) and it worked.

I then used the output files in 3dDeconvolve and worked fine also.

Using the awk command without the RS='\r" part didn't work.