how to use this keywords?

what to do with bunch of keywords?

[wizardprincess]

hi.
i did ask this question in another forum.. as i need some real good way to solve thise problem.. please help me with your suggation..

as i have site for optimization and for that i have bunch of keywords say aroun 50, now out of these only 3 most popular and important i can take on main product page. but my client wants to optimiza his site for all posible keyword for that specific product.. so now i can make pages for those keywords but then after that how to use those..?how to make them relate or how to connect them to my main product page..

please suggest me some way..
thanks...