Netscape E-mail Addresses

I replaced a hard drive in a computer that used Netscape for internet and e-mail. The guy that I did this for needs his e-mail addresses from the Netscape e-mail program, so I hooked his old drive up to my computer thinking that I could simply browse through it and find the address book. Well that didn't work. Then I tried opening Netscape and going into the e-mail program to look the addresses up that way, but I ended up having to set up the e-mail account all over again. Does anyone know if I can find the e-mail addresses on the old hard drive? If I knew the file extension, then I would just search for them.

On my computer (Netscape 4.7) it is located at:
C:\Program Files\Netscape\Users\julie\pab.na2
Obviously the user's name would replace mine there.
Copy that onto the new drive and you should be fine. Also, opening that file in Notepad, you can see the addresses amongst all the gibberish.

Thank you so much!!!!