asterisk users - May 2009 - Help with radius

Hi,
I'm trying to get my Asterisk 1.4.24.1 server working with radius and
aradial.

I have radiusclient-ng installed and asterisk radius cdr.

My cdr's fail to write to the database and i'm not sure how to
authenticate each call.

Anyone got this working or can offer any help. I've read all the radius docs
and followed them to a tee..

Cheers!!!