I had a 320GB drive failure and installed a new 500 GB and formatted and
completely reloaded all my software on the clean disk.

I installed the 320GB drive as my 2nd (D drive and can access most of my
business files but I cannot get my old emails and address book from my old
drive.

Is there a file I can rename in my new drive (i.e. a made up example of
OULTOOKLIB to OUTLOOKLIBNEW or OUTLOOKEMAILS to OUTLOOKEMAILSNEW) and copy
and paste the original files from the old drive to the new? I would rename
the files on the new drive just in case something went wrong. It would allow
me to recover.