CCL:G: optimisation



Dear all,
I am trying to optimise my reaction pathway in aqueous medium using gaussian03. In transition state water molecule is expected to form six-membered ring and hence stabilise the structure. Is using cpcm model and water as solvent is sufficient or i have to draw water molecule with  my structure showing stable TS. If yes kindly suggest additional keyword i have to use and whether for reactant and product also i should draw water molecule.

Thanks in advance.
Baljinder