Lawrence Frank and Rod Thorn are expressing their surprise--and happiness--at Nenad Krstic's return to action Thursday night in New Jersey. "He was much better than I thought he was going to be," said Frank. "It looked like offensively, he hadn't missed a beat," added Thorn. So much so that the Nets are penciling in their seven-footer for Opening Night. Now, though, they have to worry whether Jason Kidd will also be ready.