No, you will need to use winpwn or pwnage tool (1st is for pc the 2nd for mac). Then you will need to download the itunes' 2.0.2 firmware (don't install it). With this you will build a custom firmware and use itunes to restore using your newly made custom firmware. You pick this file by shift clicking restore on pc and option clicking restore on a mac. Visit
blog.iphone-dev.org to get the answer to all of your questions.