2008 Server Certificate Authority

[Gilmour, Scott]

Hi,
I have a 2008 Server Certificate Authority.  I want to use my 2008 Server Certificates with my FreeRadius Server.
I have been searching online but haven't found anything that fully explains how to accomplish this.
I know I will need to use openssl to accomplish this. Does anybody know of a good site or even a book that would 
explain how to accomplish this tasks.  If somebody can point me in the right direction that would be great.
Thanks
Scott