Where are my e-mails and addresses located? Rather, how can I back them up?

Here's the deal:

Three years ago I bought a new computer. Vista, Office 2007.
Last week this computer failed; bad motherboard.
Yesterday I bought a brand new computer with Windows 7.
I installed the old hard drive in the new computer, as secondary.
Since Office might be corrupted, I installed anew on the new drive.

Everything is fine, except for no Outlook address book or archived e-mails. I'm sure they're on the old hard drive, but how do I access or copy them?