Two years is quite a while for fuel to be sitting in a tank. It goes bad, and starts to turn into what looks like laquer. It also has a bad smell to it. Yes, there are just a few bolts holding the tank on. Get a floor jack under it though. If you are not hearing the pump when the car is trying to start, then you can pretty much believe the wiring to the pump is shorted out, or the pump itself is seized up. The wiring to the pump has a clip where you can take it apart. Get a multi-meter and check to make sure you are getting juice to the pump before removing the pump.
Good luck with her.....