Is he really the Dad?

I read in my guide that tonight's episode description reads

Rachel tells the real father the he is going to be a father

Notice the word real? I assume it is still Ross, but we'll find out tonight for real.

I hope they don't change the father! How could they do that to us!?!?!??!

Well i live in the seattle area, and the commerical they showed said something like .. we know rachel is pregnant and we know ross is the father, this week he'll find out

Angela