Never Winter Multiplayer

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hey,
i put on never winter nights, cracked it, started playing it single player, tried multiplayer and it said make an account, so i tried and it said 'invalid cd key used to create account' , i am using a cd- key i found on the net somewhere though, and it is a copied version. i haven't put the latest update on, i am running the cd version, so i dont know if that is whats causing the problem . i put '127.0.0.1 nwmaster.bioware.com' into my host file(i am using win98) and saved it as a .sam file again and it still dosen't let me make an account! can someone please help!

thanks.