I found a very old package "ImplicitPlot3D.m" (writen for v. 2.0).. but I dont know how to use this with version 5.2.
Assuming that this package is fine for v. 5.2.. where should it be saved? in a special directory?.. I have saved this file in my directory D:\temporal\ImplicitPlot3D.. I am not sure if it can run from there.
Thanks for our help,