Arduino Uno to Arduino Uno Word.doc file transfer
while(fileOut.available()){
    Serial.write(fileOut);  
  }


This doesn't quite do what you think it does.

Instead you should send the file length first and then do:

for(unsigned long size = 0; i&lt; fileLength; i++){
    Serial.write(fileOut.read());  
}


You should also investigate some kind of rate limiting to avoid overwhelming the reciever and having to drop some bytes.