Creating a LAN

Trying to create a small [2 computer] LAN in my home. I have a tower computer that uses a ethernet card hooked to my DSL router, and the DSL router is attached to my wireless router. I have a wireless laptop that uses the wireless router. I am able to access the printer on the tower thru the wirless laptop when I am using Win XP, I am trying to be able to do the same thing using my Mandriva 2008 [on my tower computer] and my laptop [using SLED 10.0]. Any help appriciated:study: