CentOS - Aug 2007 - NAS -- Centos 5 DIY or Openfiler 2.0

I need to set up a NAS.  Got a box with a 200Gb drive ready to go.  I 
have installed Openfiler 2.0 on it but.....

I really can't add other services, like FreeRadius (keep the list simple 
for now).

So maybe I should just stay with what I know and use Centos.

Other experiences?

Are there good DIY NAS instructions for Centos 5?