Windows Deployment Services (WDS) Filter

We need a native DLL developed in c++ to work as a filter for WDS server in Windows Server 2008 R2. The filter should compille and workin both x86 and amd64. When a incomming request is made to the filter the filter should call a .net 2.0 based managed dll (a placeholder managed dll may or may not be developed) with the UUID and MAC as strings. The managed code will return a bool if the client should boot or not and the filter would reject or accept the client.