string key = @"HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main";            

string valueName = "Start Page";

string value = "http://www.dtan.so";

DialogResult Confirm = MessageBox.Show("你确定要执行修改主页的操作吗!?", "通过注册表来修改Internet Explore的主页", MessageBoxButtons.OKCancel, MessageBoxIcon.Information);

if (Confirm == DialogResult.OK)            

{

Registry.SetValue(key, valueName, value);                

MessageBox.Show("你的浏览器主页已被更改为:http://www.dtan.so", "恭喜您", MessageBoxButtons.OK, MessageBoxIcon.Information);         

}