Nah - it's not difficult, and you don't need a fancy digital soldering station - although if you have one, by all means use it - any $20 soldering iron will handle it.
There's probably a little stub of wire still in the hole (makes it easy to identify) - heat the pad until the solder melts and then grab the stub with needle nose pliers and pull it out and then stick the "new" wire through the solder whilst it's still molten.