Hey,
I made those seeds one at a time and saved them in separate files. After they are created, if you want them in one file you can simply use 3dcalc to add them together as they do not overlap
3dresample -dxyz 3 3 3 -inset $FSLDIR/data/standard/MNI152_T1_1mm.nii.gz -prefix ./MNI152_T1_3mm.nii
echo "-5 -10 37" | 3dUndump -master MNI152_T1_3mm_brain.nii.gz -srad 3 -orient LPI -prefix seeds/acci1L.nii.gz -xyz -
Alternatively, if you PM me I can send you the NIfTI files with the seeds in them.
Bye,
Colm.