Got the complete edition, and all skills are met with a good margin. Im playing Drow. I'm lvl 10, and still can't choose the Shadowdancer. Is it not avalible in the original campain?

Yes, it is available in the OC (I am guessing we are talking about NWN2?). The earliest you can get Shadowdancer is level 8. You require Dodge, Mobility, Move SIlently 8, Hide 10 and Tumble 5.

Remember that it is invested skill points that count, not adjusted skill level.