Actually, after Shantanu's death, Chitrangada was made king, and he ruled for a short while until he died while killing a Gandharva w/ his own name. Then Vichitravirya was crowned, and Bheeshma abducted AAA for him. After his marriages, he ruled for 7 years b4 dying.
Following his death, Bheeshma ran things for a while until Dhritarashtra & Pandu came of age, and then Pandu was made the king.I have a new, and different question. If Dhritarashtra was thought incapable of ruling, due to his blindness, then after Pandu's death, while they waited for the Kuru princes to come of age, why didn't Vidura get crowned the king of Hastinapur? Wasn't he too considered a son of Vichitravirya as per the gotra - he was certainly not considered Vyasa's son as per Parashara's lineage.
I have another question...
Since it was already decided that Dhritarashtra was incapble of ruling, then why was he again made king? Bheeshma could have ran things again like he did after Vichitravirya's death. Also in Star Plus's Mahabharat they showed that Vichitravirya died immediately after his marriage and before being crowned king. Which version is true?