Well, I deleted VUE4 and re-installed from scratch. Even with a virginal copy of VUE4 (no patches applied), I still am missing wireframe previews. Thanks for the suggestion Mike, but its not a driver problem. Had the same driver for the past 2 years (for Matrox Millenium II - the latest), and have had no problems with other apps. I also run AMAPI 4.15 for modeling, and that program relies on OpenGL a lot. I do remember having wireframe, so the only thing left to try is a small model. If that has wireframe, and this big one doesn't, it could be a file size/VUE problem. The file I'm trying to work with is large. DXF is 64mb, a 3DS version of it about 15mb. I'll post my results tonight after I try it. Cheers...