There are tutorials for creating the Heroes title out there. A bit of Googling should find it for you.
Basically, you could just add a lens flare (Generate>Lens Flare). There are several tutorials out there for spicing up AE's built-in lens flare and some for creating your own. Also, you could get Optical Flares from Video Copilot or Knoll Light Factory Pro from Red Giant.
Since you're new to AE, I would highly recommend that you start here. AE is not a program that you can just start using without a good foundation in the basics otherwise you will get really frustrated.
Thank you. Could ypu possibly give me a link for getting started in CS3? Im using CS3.
The getting-started information that Michael pointed to is almost all valid for After Effects CS3. The basics of the program haven't changed much between CS3 and CS5; the main changes are in more intermediate and advanced features.