I had a computer crash recently, too--lost everything!!!!
Fortunately, most of my stuff was printed (and I've now learned to do backups). I don't know how much I can help you, but perhaps we can help each other? I have a Klawitter ancestor, Katherine (or Katherina), born 1809/1812 (Prussia), died 1886/88 in Minnesota. She came over with her husband, Jacob Klammer. Perhaps our lines meet up somewhere?