Error Messages

I don't understand what i am doing wrong.

I am getting the following error messages:
invalid conversion from `const char*' to `char'
missing template arguments before '.' token

I am making a inventory program for computers, Using Computer name, model number and serial number.

#include <iostream>
#include <string>
#include <vector>

using namespace std;
string name;
string model;
string serialNumber;
string inventory;
string vectorOne;
string vectorTwo;
bool flag = 0;

int main()
{
  vector < string > vectorOne;
  inventory.push_back("Asus");
  inventory.push_back("324689");
  inventory.push_back("25F36T88C45Y");
  cout << "\n\n";

  vectorTwo < string > vectorTwo;
  inventory.push_back("Asus");
  inventory.push_back("354791");
  inventory.push_back("4GR25BK6854K");
  cout << "\n\n";

  cout << "Inventory is:" << endl;
  for (long index = 0; index < (long)vectorOne.size(); ++index)
    cout << vectorOne.at(index) << " ";

  vectorTwo.erase(vector.begin() + 0);
  vectorTwo.insert(vector.begin(), Asus);
  vectorTwo.erase(vector.begin() + 1);
  vectorTwo.insert(vector.begin(), 568712);
  vectorTwo.erase(vector.begin() + 2);
  vectorTwo.insert(vector.begin(), 58H5RV897J12);

  cout << "Inventory is:" << endl;
  for (long index = 0; index < (long)vectorTwo.size(); ++index)
    cout << vectorTwo.at(index) << " ";

  int temp;
  cin >> temp;
}