Looking for Discrete Simulation Components for Delphi

Hello,

I am about to develop a compute simulation project. Such as GPSS
simulation languages in Fortran have been well known. I am thinking of
making similar compenets in Delphi. But before I start, I would like to
know if there already exist such components in delphi, preferly in
freeware or shareware. If anyone has any information or reference about
it, please send mail to me(because I have very limited internet access).
When I get enough respenses, I will post a summary.

TIA.

Quanhuan Ye(yequanh...@263.net)