[gmx-users] how to add a new potential to the system

[コウ チ]

hello All :

 i want to do a simulation of DPPC molecules on a gold surface. To  treat 
the intercations between gold surface and DPPC molecules i want to add a 
new  energy potential to the system. how to modify the orginal source codes 
or is there a easier way to do it ?
 
 regards
                                                         caoch 
                                                        tokyo institute 
technology