Modeling of anchored chains



I have a need to model, with molecular mechanics, a system consisting of long chains anchored to a solid support at one end and small biomacromolecules at the other end of the chains. The systems are chains anchored to large silica surfaces by silanol groups. I would appreciate pointers about building the model.
 
My modeling software includes ChemOffice (Win98) and Tinker and Gromacs running in Linux.
 Thanks in advance.
 Stephen P. Molnar, Ph.D.                                Life is a fuzzy set
 
Consultant Multivariant and stochastic
 Material Science/Project Management/Modeling
 http://web.jadeinc.com/FoundationChem