如何将同一程序集的多个版本添加到gac

My one ASP.NET web site uses two different business object class libraries. There is a common framework DLL (CSLA.dll) between these two libraries. The problem is that one library wants to upgrade to CSLA v.4.0.1 and the other wants to remain at v.2.1.4.My one ASP.NET web site uses two different busi