introduction to xacml implementation

[bdsbvtang]

I wanted to know if anyone could point me in the right direction for novoice who wants to implement xacml. I have looked at the suns implementation of xacml in java and it is very handy but it does not tell me what i will need e.g what kind of server, configuration and things of that nature. if anyone could help me i would really appreiciate it. thank you all in advance for your help