====== To Backup ======
===== foobar2000 ===== 
''%APPDATA%\foobar2000'' or ''c:\program files\foobar2000''. just copy the whole folder.

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===== putty =====
in admin command prompt, this command will save putty settings & sessions as ''putty.reg'' in current folder. <code>regedit /e "putty.reg" HKEY_CURRENT_USER\Software\SimonTatham</code>