YEAAAAAAAH ! Now it works ! I've followed some of these explanations (http://doc.ubuntu-fr.org/lineageii). So, I recapitulate. How to install and launch Lineage 2 Gracia : part 3 (Final) through wine (1.0.1) ? After installation (of wine first then Lineage, of course), change compatiblity mode of wine to Windows 98, replace the DSETUP.dll with the one on http://fyrre.ivory-tower.de/ (gameguard patch), add the fonts given here http://www.megaupload.com/?d=2PSJ4DVU in ~/.wine/drive_c/windows/Fonts/, dont forget to change the host file if connecting on a private server (publics don't work), and launch L2.exe in system folder. And, enjoy. Note : i again have the "AGP not activated" error, but with clicking OK the game works. Don't worry.