|'I installed win7 on a new Hard Drive in laptop -|
kept the original installed...'
Laptops typically have room only for one hard drive at a time. Did you swap out the hard drive and then install? If so, you can only use the original hard drive as an external drive. If this is true, just attach as external and format the drive (after you transfer anything you need to the new drive).
If you have both drives installed (like in a desktop), you cannot format the original drive without needing to 'repair' your windows 7 installation since the boot sector is on the original drive when you installed on the second drive. To do this, remove the orignal drive, move the new drive to the same position (reset jumpers if IDE drive) and use your windows 7 install disk to do a repair install to replace the missing boot manager and set it up as a single boot. After this is working properly, reinstall the original drive (reset jumpers if IDE), transfer files over to the new drive, and reformat the original hard drive fresh and clean (or delete the partition and reestablish the new partitions you want and format them) and rearrange your files as you prefer.
You have to be a little bit crazy to keep you from going insane.