Toyota Repair: toyota camry 2002 v-6, toyota camry 2002, fuse box

Question
I just changed the battery on my camry, however i just happen to put the positive on the negative, and my alarm when off so i quickly took the plug off the negative. My head lights work.   
My alarm works.  However the car will not start.  What could be the problem?

Answer
Open the fuse box under the hood near the battery and check the large alternator fuse, it has a plastic cover on it and is rated either 100 or 120 amps, this fuse usually blows when the battery is connected backwards, the fuse is bolted in on the inside of the fuse box which will require diasssembly of the fuse box to get the fuse out.