Wotlk video settings

Hello guys, I've decided to download the wotlk client from the site (the new one with wod models) and now everytime when I enter the game I must change my video settings and go trough blizzard rules etc. I changed the settings on wow.exe and now there is no tick on "Read only" but still my options don't save when I leave the game. It's annoying so I'll be thankful for an answer on how to fix this little problem.

you need to remove "read only" from the WoW folder, not only wow.exe

I see, thank you