programs to extract md needed force constants from g98 calculation



Hello, all
 I'm trying to write a force parameter file for a inhibitor with sulfite
 substituents. Since the major force fields do not have them, I use g98 to
 generate the force constants. I wonder if there are any softwares that
 can change g98 output into the md format force constants. Thanks!
 Regards,
 -Yunfeng