A nice article for linux users :
As soon as I saw the news that BioWare released a beta of a Linux client for its popular and successful Neverwinter Nights title, I downloaded the beta (registration required) and went shopping for the prerequisite retail Windows version of the game. Before I proceed, let me offer this brief warning: Neverwinter Nights is the mother of all timesinks. Do not follow my path unless you have nothing important you want to get done for the next week or so.
I tried to install the beta the same afternoon I got home from Wal-Mart with my retail version of Neverwinter Nights (NWN). That"s when I ran into a snag. According to the BioWare Web site, I needed more than just a retail copy of the game. I needed an installed Windows version of the game. That put a crimp in my plan, because I don"t have any Windows machines on which to install it.
I tried unsuccessfully to run the installation from the CD using WINE, but I didn"t get far. There may be tweaks that can be made to WINE to allow it to run, but before I got that far I got a tip pointing me in a new direction. Someone on the #openknights channel on irc.freenode.net told me that an installer for Linux, written by someone named "ravage," could be found on the Icculus.org site. (Editor"s note: See the Resources section for the author"s tutorial on getting started with IRC.) Icculus.org seems to be at the center of a lot of gaming activity in Linux these days. In addition to the installer, Icculus hosts an excellent NWN FAQ. NWN is far from the only major game Icculus supports.