I killed the frost giants at wyrm's tooth, freed the slaves and killed the little flying dragons...now I don't know what to do...?!? I have read posts about a paladin(?) and a place where there are 6 symbols which one needs to touch...where the hell are these places?!?!?

I believe you've got two Badges, if not you have to go back to the area with the Drows and talk to an Umber Hulk in an adjoining cavern. If youäve got the Badge from Krilag you have to go to the very North Eastern part of the Wyrm's Tooth map, it's the area with entrances to the Frost Giant and Frost Salamander areas. There should be an entrance/Exit which leads to a small area where you could go back to Kuldahar or continue down to Lower Dorns.