Chris,

Buy or get a 4 or 8 port switch. (If you have a Freecycle group near you, you can probably get a 100MB one free). Then just use it like a splicer. Plug the ethernet cord from the router into the switch, and then out from the switch into the PCs. Should be nothing more too it.

__________________
Fredrick T. Greco
Senior Pastor, Christ Church PCA (Katy, TX)
Christ Church Blog

"The heart is the main thing in true religion...It is the hinge and turning-point in the condition of man's soul. If the heart is alive to God and quickened by the Spirit, the man is a living Christian. If the heart is dead and has not the Spirit, the man is dead before God." (J.C. Ryle)