I got the information that elves get an extra attack with long sword and bow by Dan Simpson's guide that you get from
www.gamefaqs.com. When I play an elf, it certainly doesn't SHOW that you get an extra attack with a longsword or bow, nor does it show that you get bonus to THACO, damage or to hit.
The problem with the half-orc is solved. I replaced him with an elfish fighter/thief, and he has been as good fighter as the half-orc so far (18/00 in str). I had to restart the game again, and play the usual route. I played with my 4 characters and Imoen and Jaheira through the dungeon. After I got out, I dropped Jaheira, and went to the tent to get Aerie. After that I went to the inn and killed Mencar's little group, got the full plate mail, and dropped Aerie. Then I freed Hendak, and got the Tuigan bow. After a lot of stealing, I am off to D'arnises keep with Nalia. There has been no major problem at all, except it is a little hard to just have fighters in the group, since they get hurt all the time. I remember the lesser golems in the dungeon do 45 damage per hit. Soon, my Ranger will dual to a cleric, so that someone can heal the others. Maybe I should have let the Ranger dual from the start, but I won't play the game from start again. This will probably be my last game.