Question about upgrading to PS3 Slim

[MerrickG]

Hey guys,

I currently own an original PS3 60GB with BC and it contains and upgraded hard drive to 320 GB.

Anyway, my brother got a PS3 slim for xmas, but he was disappointed to find out that it does not have BC since he still plays a lot of PS2 games.

So I told him I would trade my PS3 for his. (I have no use for BC).

However, I want to keep my 320 GB hard drive and place it in the Slim.

THE QUESTION:
Is it just a simple case of exchanging hard drives between the two consoles or is it more involved than that?

Yes, Im aware that there are probably MULTIPLE threads on the subject, but the search button didnt yield me what I was looking for. All I get are threads asking about whether the hard drive is upgradable.