> I only have
> experience with debian and then mainly through GUIs, which rules out other
> distros and also Ubuntu server (don't have time to learn how to set samba
> up using command line).
Install Webmin. That will save you loads of time. But don't dish out
credentials to anyone you don't trust completely, and don't use it to set
up sendmail.
> However, I note that the box comprises two 40
> gig sata drives. Question... is it worth/simple to raid it in ubuntu or
> debian?
It's very easy. If the data is important, it's worthwhile doing it.