The car will need both a operational Fuel and Electrical system to "Start". It may or may not be "spark" on the electrical side.
I have a Carburetor on my car so I may not be the best source of information by memory other than looking at the service manuals.
However going by what you've posted here, your situation has gone from bad (hardly runs) to worse (won't run at all) since changing the fuel pump.
To me that would seem to indicate one of two things. Either the Pump wasn't the cause of you original problem or you installed the pump somehow wrong.
Use the right procedure for your engine for seeing if the pump is delivering fuel to either the rail or the throttle body. If it isn't then you'll need to find out why.
If it is check the fuse box for anything to do with the fuel system and if there is one that says "fuel" pull it and make it's okay.
Disconnect the negative battery cable for a minute of two, then reconnect it to clear the Computer. Actually you should have had it disconnected when you changed the pump as a safety precaution.
Greg