is there an english guided tour in Bird's Nest and Water Cube? need a reservation beforehand?

This is the third time I am posting this question now!!! You are supposed to have answered it but I do not find the answer nor my question posted anywhere. Very frustrating! Otherwise your website is good.We are going to Beijing on Feb. 10 until 16. So please be fast with your answer and send me directly via Email. I bet other visitors would like to know the answers.