A quick list of things to check now that I know what we are dealing with.
If you haven't yet, check the fuse. There should be a panel in the cab and one under the hood. The fuel pump fuse and relay should be in the one under the hood.
If you have already checked the fuse, check it again. If you have a spare, change it just to be sure. Fuses are a dime, fuel pumps are $300ish
Open the door, and listen when you turn the key to the run position. Don't try to start it, just turn it to where it would be when driving and listen. You should hear a low humming sound for about 5 seconds. If you hear nothing skip the next few things and check the fuses again. (been bit by to many fuses)
Is it below freezing where you are? If so, you may have ice blocking the pickup. I know that it was running about a half hour before you tried to restart it, but it is a possibility. If you heard the humming sound, buy a bottle of heet (
click for website) to remove the ice and water from the tank. It might be a good idea to add a bottle of heet even if you didn't hear the pump. If ice is an issue, it could be stopping the pump from moving.
Change the fuel filter. It costs about $15 and should be located about midway between the rear axle and transmission on the inside of the frame. Takes about 5 minutes to change.
If you couldn't hear the fuel pump you could try troubleshooting it or replacing it. If you want some troubleshooting tips, let me know. If you want to replace it, a lower cost alternative to the factory fuel pump is to add an inline fuel pump. They are about 1/3 the cost and take about 1/10 the time and effort to install. Most will provide higher fuel pressure and end up more reliable.
Good luck, I'll offer whatever help I can from Portland. I'm a mechanic and spend quite a bit of time giving technical support over the phone. I don't know how mechanically inclined you are, but I can help you troubleshoot it out if you want. I've had about 20 people swear that their fuel pump went out, but only 4 or 5 needed to be replaced. Don't count out the possibility that it might not even be fuel related. You need 3 things for fire. Fuel, Air and Ignition Source. Check all 3.