Just a thought here, whens the last time you replaced the fuel filter? you havent said if you checked for fuel at the rail yet ( which requires either a phillips or flat head screw driver to remove the fuel pressure reg ) ( be carefull if the pump is working and there pressure there dont be in the way of it ). Have you checked your fuses to make sure you didnt blow any of the ones which control the engine and such?

Check to see if your spark plug wires are firmly attached at both ends. A disconnected, but still attached, coil wire at the distributor caused a running failure on my old 740. Since the coil wire is at the bottom of the cap, it can work loose.

Check it out.
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Warren Bain - '99 V70GLT G-Valve > 70K mi, '96 965 >110Kmi Wifemobile near Manassas Va.. Check the 700/900 FAQ via the 'features' pull down menu.

You have probably burnt up the main fuel pump as the other respondant stated. My son learned about this the hard way.

I bet after running out of gas you continued cranking and cranking in a febal attempt to start it. By doing this the fuel pump may burn out because it relys on gas to cool and lubricate the pump. Ehen no fuel is going through the pump it will run extremly fast. This and lack of lub. will defenitly burn out a pump on an old car. Try turning the ignition on and off then listening for the fuel pump priming for a couple seconds after turning ignition to position 2. If you hear nothing i would say go find yourself a pump. If you hear it prime you may simple have air traped in the pump or fuel lines to fix this remove your fuel line at the injector rail then crank and check if you see a steady stream of gas air bubble free. You will need to crank for at least a few seconds to be sure there is no air. Try this and if it doesnt work contact me.