In dvorak symphony #8, is there any english horn other than the 3 bars in the first movement??? In the upcoming season, my orchestra is going to be playing this and i just need to know!!!

Nope! The english horn has to get all set ready and warmed up just for those three bars!

D-oboe

what is the point of that? did he just do it because he wanted the tone of the e.h. on that theme in that spot ? why not just write it for oboe?

you can play in the very large chord before hand. A big loud low D will work there. It is not cheating it is getting the air flowing through and instrument that has been sitting there freezing for the first fifteen minutes.

The reason the english horn is there is basically because it reaches that low G (the EH`s low D). It also has a different tone than the oboe, which I think is put to good use in that excerpt. If he had used the oboe - even if he transposed the music up high enough for the oboe to play - the effect would not be the same.
One time-honoured trick is to play the long tone that the oboes have a few measures before (I believe it`s an F# that progresses to a G, although I could be wrong) on the English horn to get it warmed up and ready to go. Of course it should be warmed up before you start the concert (if you have a nice conductor you can get them to put it at the beginning of the program!) but that long tone will remove any doubt.
Good luck with the part!