I jumped my 1999 honda accord ex and think I crossed the cables and blew a
 

fuse. What fuse would blow first.?

if the car won't start still and is just dead in the water you might not have blown a fuse. I hate to say it, but it is very possible that you have fried your cars ECU. You can check your fuses under the hod first, then the ones in side the car. Look for ingnition fuses. if there are no blown fuses, you might have bigger problems.