public static string ConnectToRegistry (string servername)
{

string regKeyToGet, keyToRead;

ConnectionOptions oConn = new ConnectionOptions();
oConn.Username = "admin";
oConn.Password = "pass";
ManagementScope scope = new ManagementScope(@"//" + servername + @"/root/default", oConn);
registry = new ManagementClass(scope, new ManagementPath("StdRegProv"), null);

// Returns a specific value for a specified key
ManagementBaseObject inParams = registry.GetMethodParameters("GetStringValue");
inParams["sSubKeyName"] = regKeyToGet;
inParams["sValueName"] = keyToRead;
ManagementBaseObject outParams = registry.InvokeMethod("GetStringValue", inParams, null);

return outParams["sValue"].ToString();

}