3D Studio Max Rendering Speed

We ahve 2PCs with the same configuration, having 2 x 128 MB DDR/333 MHz RAM, 2.4GHz Prescott PIV, 845 Chipset Board, one having fine working with Autocad 2000 and 3d Studiomax 4.0, but secong having problem only with 3D studiomax 4.0. The proble is very slow rendering. Any suggestions