help with moving one hdd to another

so i'm running low on space on my current 160 gig hard drive. I'm planning on buying a new 320gb SATA 3.0 drive. I want to have the SATA as my primary and the 160 ATA as storage for video and photos. So im wondering what is the best way to transfer everything over from the 160 to the new drive. I would like to avoid having to reinstall all the programs and reactivating windows if possible. what is the best way to do this?