Freeradius as peap-mschap radius proxy

Hi, I am newbie to Freeradius and have to get a working solution for Friday. I need to configure Freeradius on a Linuxmint 16 pc to be a Radius Proxy in front of a Windows 2008R2 NPS server. The Windows 2008R2 Server is configured to support peap-mschap Radius connections and is currently working. The clients are coming from a variety of /24 network, the users being authenticated all exist on a single domain. I have tried to google for information on peap-mschap proxying but find the information a little confusing. Could someone point in the correct direction to get the information needed to configure Freeradius as a proxy server. TIA