2001 Oldsmobile Alero Car won't start

Changed spark plugs and wires on my car, and went to start it up and it refuses to start. Checked all the plugs and wires to make sure everything was hooked up properly then noticed that when we turn the key we don't hear the fuel pump like we did before.
Unhooked the battery for 24 hours to reset the computer and the car still won't start. Smacked the gas tank today with the key turned on and nothing.

Wondering what other things do we need to check? Car was running until the plugs and wires were changed.