Wow, they say a picture is worth a thousand words...
I don't know what hard disk you are using, but you might check the manufacturer's site for software to copy your entire disk. I know Maxtor has software so that you can duplicate your old drive to your new drive, then just swap the hard disks and you system is the same except you have a nice big new drive. You may want to look into that.
Here is the instructions for MAXBLAST the Maxtor software that I've used. It will only work with Maxtor or segate hard drives, but I know it works because I've used it.
and here is a link to the software you can download from Maxtor support:
If your hard drive isn't Maxtor or Seagate, let me know what make it is and I'll help you look for software to clone your system drive so you don't have to do a complete re-install.