我下了C＃版的源码，进行了如下改动：
一、我的SQl Server用的是windows验证，修改各个config文件的数据库连接字符串为“Data Source=localhost;Integrated Security=true;Initial Catalog=thePhile;trusted_connection=true”

二、修改Machine.Config的<processModel>标签里面的userName="SYSTEM"

三、重启计算机。
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现在遇到一个新问题，就是站点里面不能使用中文，比如：我添加一个中文的新闻，结果就全部显示的“?”，我把数据库里面的相关字段也改成了ntext类型或者nvarchar类型，排序规则改成了Chinese_PRC，这样在数据库里面可以添加中文内容，但是通过页面进行添加还是显示“？”请问是怎么回事，怎么解决？

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还有，我打开论坛帖子的时候，页面显示的是：
Page Error

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An unexpected error has occurred on this page. The system administrators have been notified. Please feel free to contact us with the information surrounding this error.
The error occurred in: http://localhost/ThePhile/Modules/Forums/Topic.aspx?TopicID=56
Error Message: 对 text 数据类型不支持代码页转换。从: 1252 到: 936。
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Stack Trace:
System.Data.SqlClient.SqlException: 对 text 数据类型不支持代码页转换。从: 1252 到: 936。 at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream) at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior) at System.Data.SqlClient.SqlCommand.System.Data.IDbCommand.ExecuteReader(CommandBehavior behavior) at System.Data.Common.DbDataAdapter.FillFromCommand(Object data, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable) at Wrox.WebModules.Data.DbObject.RunProcedure(String storedProcName, IDataParameter[] parameters, String tableName) in C:\wrox\ThePhile\Modules\Core\DbObject.cs:line 147 at Wrox.WebModules.Forums.Data.Replies.GetReplies(Int32 topicID, Int32 pageNumber, Int32 pageSize) in C:\wrox\ThePhile\Modules\Forums\Forums.Data\Replies.cs:line 55 at Wrox.WebModules.Forums.Business.Topic.GetReplies(Int32 pageNumber) in C:\wrox\ThePhile\Modules\Forums\Forums.Business\Topic.cs:line 145 at Wrox.WebModules.Forums.Web.Topic.BindGrid() in C:\wrox\ThePhile\Modules\Forums\Topic.aspx.cs:line 126 at Wrox.WebModules.Forums.Web.Topic.Page_Load(Object sender, EventArgs e) in C:\wrox\ThePhile\Modules\Forums\Topic.aspx.cs:line 99 at System.EventHandler.Invoke(Object sender, EventArgs e) at System.Web.UI.Control.OnLoad(EventArgs e) at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Page.ProcessRequestMain()

请问怎么解决？