afni.nimh.nih.gov

Dear AFNI users,

I m totoally new to AFNI.
I try to apply to3d on my data for further analysis. It seems that input data is with *.DCM extension. However, my fMRI data from Simons only come in *.IMG and *HDR. Therefore, the error messages shows that How can I fix this issue? Could anyone suggest a image converter for me? Or, is there some other way to fix the problem? Thanks!

Veda