I have my home network with XP media center and Lexmark 1240(designed for XP systems) older PCs on network can print just fine. 2 notebooks - Acer and Compaq - each with VHP operSys, give message ' cannot access printer' Though the network printer printer is visible. Also each VHP(VistaHomePremium) PC cannot run the CD provided for Lexmark 1200 printer installation. I suspect VHP is not compatible with its own microsoft family, even running compatibility ( as XP system) does not allow printer software to function. I suppose MS is wanting everyone to upgrade to V, or face a world absent of common ground. :-( Curt