Overheating is not necessarily due to a head gasket, however it is guaranteed to be from some sort of coolant issue

Check your coolant level, if you blew your head gasket there is a good chance you'll be low on coolant. Also, check for coolant leaks around the upper and lower radiator hoses. Old hoses can get brittle and crack, especially when a lot of hot fluids are being pushed through them for long periods of time.
To tell if your head gasket is bad, do the following:
<iframe width="560" height="315" src="http://www.youtube.com/embed/QA7KVQq9vKA" frameborder="0" allowfullscreen></iframe>
If it is bad, you can try this (I have never done it so I'm not sure if it works though):
<iframe width="560" height="315" src="http://www.youtube.com/embed/YL9QjN7AcW8" frameborder="0" allowfullscreen></iframe>
FYI: youtube and google can be your best friends for stuff like this. Lots of info on the web
Good luck!