Electronic Journal of Differential Equations, Vol. 2005(2005), No. 29, pp. 1-7. Title: An Orlicz-Sobolev space setting for quasilinear elliptic problems Author: Nikolaos Halidias (Univ. of the Aegean, Samos, Greece) Abstract: In this paper we give two existence theorems for a class of elliptic problems in an Orlicz-Sobolev space setting concerning both the sublinear and the superlinear case with Neumann boundary conditions. We use the classical critical point theory with the Cerami (PS)-condition. Submitted October 14, 2004. Published March 8, 2005. Math Subject Classifications: 32J15, 34J89, 35J60. Key Words: Landesman-Laser conditions; critical point theory; nontrivial solution; Cerami (PS) condition; Mountain-Pass Theorem; interpolation inequality.