Most auto parts store sell the replacement injectors. You could probably pick them up from an online store as well. Try Bill Jenkins (search) he works at the dealer in Vegas but gives us better prices.
Without knowing the codes that the car has (it probably has one if it died) its going to be hard to tell that way what is wrong.
Check for spark by pulling a plug and seeing if the wire will arc to something that is grounded, preferably not you. The plug could be in the wire to test, or something else metallic could be used. If that is good you know you have spark.
I would doubt it would be your injectors because the chance of all four getting clogged at the exact same time is highly unlikely. I would suspect the fuel filter and/or pump assembly for a no fuel issue. You can usually hear the fuel pump prime the fuel system if you turn the key to on but dont crank the engine. If both the fuel filter and pump are good you know you have fuel.
If all of that is good, you could be getting into something a little more complex (or I could be missing something obvious that I am sure someone will point out). Sensors could be shot, the timing belt could have skipped a tooth/stripped/broke, etc.
Was the car driving good before it died? Was the check engine light on before it died? If it was, do you know the codes that it had thrown? When was the last time you changed the fuel filter/plugs/wires/etc?
