Build a forum for my university

 Hi every body.I want to establish a forum for my university by asp.net and C#.I downloaded some of free source code such that:Yetanother forum,ITC,Communityserver.But i cannot to run it.and it very complex
Anyone had built a forum.Could you give me a source code forum for me to reference or guide me to establish a forum by asp.net and c#.Thanks you very much. 
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