Battery Jumping For Morons

Yea I once again left my lights on and drained my battery on my 1994 jeep wrangler. I went to go jump start it like I always do except this time something went wrong. I accidently contected the positive to the postive and the negative to the negative on both cars. Needless the say when I tryied to start my car smoke started pouring out my fuse box. I checked all the fuses they seem fine but everthing is completly dead. I know I mess up my electrical system pretty good I was wondering if you have any idea to the extent of the damage I might of caused?