（50分求解）水晶报表打印纸张大小控制和打印报错问题？？？？？？急！！！

我使用的是VS2005自带的水晶报表，我在网站上放3个TEXT.BOX用来输入查询条件和一个查询按钮，拉入CrystalReportSource1和CrystalReportViewer1，格式设好的报表名CrystalReport。目的是通过点查询按钮Button1把资料查出来在已经定好格式的报表里显示，然后直接打印，我怎么把打印纸张大小固定呢？比如1/2letter 在VS2005里调试时可以在报表打印机里设置，预览正常，但在客户端连时报表大小就变了！还有就是查出资料后点打印按钮点打印时弹出“出现通信错误。将停止打印”。这该如何解决？C#代码：
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using CrystalDecisions.Shared;
using CrystalDecisions.CrystalReports.Engine;
using System.Data.SqlClient;

public partial class _Default : System.Web.UI.Page
{

protected void Button1_Click(object sender, EventArgs e)
{
if (TextBox1.Text == "")
{
TextBox1.Text = "0";
}
if (TextBox2.Text == "")
{
TextBox2.Text = "0";
}
if (TextBox3.Text == "")
{
TextBox3.Text = "0";
}
string sql = "SELECT Corpid, corpname, aliasname,fstcreate FROM corpbsl where corpid between ' " + TextBox1.Text + "' and '" + TextBox2.Text + "'or corpid='" + TextBox3.Text + "'";

string DBConfig_sql = @"Data Source=DESI;Initial Catalog=crmtmp;User ID=sa;Password=zy";

DataSet ds = new DataSet();

SqlConnection sqlCon = new SqlConnection(DBConfig_sql);

SqlCommand sqlCmd = new SqlCommand(sql, sqlCon);

SqlDataAdapter sqlAd = new SqlDataAdapter();

sqlAd.SelectCommand = sqlCmd;

sqlAd.Fill(ds, "sql");

CrystalReportSource1.ReportDocument.Load(Server.MapPath("CrystalReport.rpt"));

CrystalReportSource1.ReportDocument.SetDataSource(ds.Tables["sql"]);

CrystalReportSource1.DataBind();

CrystalReportViewer1.ReportSource = CrystalReportSource1;

CrystalReportViewer1.DataBind();

}
}