Recover emails and address book from Outlook Express

HELP!!!

I built my friend's dad a computer, taking his old one apart and recycling the case. Before I took his old machine apart I asked him if he was SURE he had everything off the drive that he needed, and he advised he was sure...

...However when I built the new machine he said he needs all his emails off the old harddrive (he never exported them anywhere, same with his address book)

Frustrating I thought, but I have a Harddisk enclosure caddy thing, so I thought I could just hook the drive up as a mass storage device and import them from his original drive.

I can access his orginal drive and all his "application data" which is where I presume they were kept, I tried copying over some of the app data for outlook to see if that would work (it didn't) I found 4 eml files on the drive and tried to import them to outlook on new machine, (didn't work) and I tried running outlook from the old drive, but it just fires up outlook on new machine with no emails or address book.

I am thinking they must be stored somewhere on that drive and surely there is a way to access/import them without having to rebuild his old machine from scratch, just so I can boot up windows and then export them in order to import them???

Anyone know a way????

Thanks!!!!!!!