I was using windows xp and my computer was hacked so I had to get a new hard drive and I also upgraded to windows 7. After installing thunderbird I noticed that all of my folders were missing. I had folders specifically for emails from my bank, certain cites that included my passwords for those accounts, utility payment records and on and on. Now I can't even find where to make a personal folder for all of my new e-mails that I need to keep. I really want to retrieve my old folders and incorporate them into my thunderbird that I currently have downloaded on this new system.