CCL: Atom types in xyz files

["Max J Prendergast" <eneas##usal.es>]

 Sent to CCL by: "Max J  Prendergast" [eneas]_[usal.es]
 Hi everybody,
 Im new using TINKER and im not able to run a single conformational search with
 OPLS-AA. Later, i realized it was necessary to use xyz files containing
 additional columns with the atom types of the force field employed.
 Is there any software (GUI) where i can draw the molecule and then save directly
 to xyz with the appropiate atom types with different force fields (OPLS-AA,
 AMBER, MMFFs)?
 Im working with peptides, so its very important to find a simple way to perform
 that.
 Thanks a lot.