computer fried?, u.u Options

[DeathWing]

hello this is my first post and im very happy to find this place, this has been really helpful and fun to meet all these 6g celica members, i hope to stay here long

well i have a problem as follows:
http://www.6gc.net/index.php?action=members&itu=5237 <- my ride
i was on vacations and my mother used my car...the thing is that she left the dor badly closed...well battery drained....and my moms boyfriend looks like he conected the battery in the wrong way (+ with - and - with +)

well i arrrived at home...car didnt start...2 fuses burned the ecu and another one...i replaced them...ok car starts....now....no repeating lights...no tacometer (rpm meter)..cant change shift (automatic), breake is hard, no error on instrument panel....no radio...no air sistem, no difroster, no cig...no automatic windows...no sunroof....no alarm...no automated door closing...so all i can do is turn on engine..acelerate, and turn on lights...

im really sad and i dunno what the problem could be...anyone with experience that could help would be greatly apreciated...im really sad