You WILL need a bootdisk for this project. Best place on the 'net for bootdisks is
Bootdisk.com
Which drive are you having a problem with? The new one or the old one? How have you copied the info from your old drive to the new one?
Did you install an operating system (Windows) onto the new drive?
You are going to have to do something pretty tricky and it's really important that you get it right so this info is vital.