Uninstall a none Microsoft program on a remote machine via WMI

[AndieDu]

Dear All, I am scratching my head about 4 hours to get this sorted, but without any luck. what i would like to do is on my windows form, it connects to a remote machine and then display all the programs that installed on a windows server 2003 box on a ListBox, then user can select one of the program, and click the Uninstall button to uninstall the selected program. I am able to load all the programs installed on the remote machines by this code:

public static ArrayList GetAppLists(string p_machineName)
{
RegistryHive hive = RegistryHive.LocalMachine;
RegistryKey subKey;
string displayName, displayVersion, keyNameCurrentMachine32;
ArrayList al = new ArrayList();
//ArrayList uninstallStrings = new ArrayList();

        keyNameCurrentMachine32 = @"SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall";
        using (RegistryKey regHive = RegistryKey.OpenRemoteBaseKey(hive, p\_machineName))
        {
            using (RegistryKey regKey = regHive.OpenSubKey(keyNameCurrentMachine32))
            {
                if (regKey != null)
                {
                    foreach (string k in regKey.GetSubKeyNames())
                    {
                        using (subKey = regKey.OpenSubKey(k))
                        {
                            displayName = subKey.GetValue("DisplayName") as string;
                            displayVersion = subKey.GetValue("DisplayVersion") as string;
                            if (!string.IsNullOrEmpty(displayName))
                            {
                                al.Add(displayName + " " + displayVersion);
                            }
                        }
                    }
                }
            }
        }
        return al;
    }

but when i try to uninstall the particular progarm by this code:

private void UninstallProgram()
{
ConnectionOptions connection = new ConnectionOptions();
connection.Username = txtDomain.Text + "\\" + txtUserName.Text;
connection.Password = txtPassword.Text;
connection.Impersonation = ImpersonationLevel.Impersonate;
connection.Authentication = AuthenticationLevel.Packet;
connection.EnablePrivileges = true;

        ManagementScope scope = new ManagementScope(@"\\\\" + cbServerAddress

[AndieDu]

no one had any clue or i just posted in the wrong section of this forum?