JV,

Buy a new large hard drive and Norton Ghost.

Make a drive image of your existing drive (the specifics are in the instructions) onto the new larger drive. Boot up on the new drive and you are up and running as if nothing happened except you've got a larger drive (you can even put the old smaller one in as a second drive, and reformat it to clean it up as everything you had will already be on the new larger Ghosted drive).

It's easy.

Hope that helps.
Dan