[gmx-users] creating topology for ligand

[neelam wafa]

Dear gmx users

I am trying to run a protein ligand simmulation. How can i create topolgy
for ligand. prodrg topology is not reliable then which server or software
can be used?  can topology be created by T LEEP off ambertools package for
gromacs??
secondly how to select the boxtype as I am new to simmulation so cant fix
the problem.  Please also guide me what factors should be considered to
select the water model??
Thanks in advance.