Vhat video card do you have, btw? The there shouldn't be any kind of filtering, unless you applied such before starting a game. Try different resolutions. Some video cardds also have a buil-in blur effect, that's why I'm asking about your video card. MAME usually needs specific Neo-Geo romsets, so I don't think NeoRAGEx set will work, but I'm not sure. (feel free to correct me if I'm wrong) The latest version of MAME is 0.81u9. But that's the *original* MAME, I don't know about the different MAME builds.