There is an easier way.
go to
www.teambg.org (it _should_ be back on sunday, but dont bet on it) or
www.teambg.net (i think its .net) and download TDD. in it you get, more quest, new items, 75 new kits and some new races, including drow. of couse it is 266 Mb, but it should be worth it. of course, its not yet compatible with ToB, so you'll have to wait for that.
and the dimension door ability is not usable by players, its just a plot device when an NPC needs to teleport somewhere.