You can download a recovery software. I recommend WiseRecovery to you, it helped me a lot
For windows XP get yourself a copy of diskternals. I have had some very good results in the past with this program.
Maybe you mean autoexec.bat because windows xp doesn't have autoexec.exe. even more windows xp doesn't use autoexec.bat anymore, it has it's own file which is called boot.ini. autoexec is important for windows 98/Me and so on. You don't need to recover it. Unless you upgraded your PC from windows 98/me or something like that it the autoexec has certain programs to boot. If you lost it comlitely there is no way to restore it. But you can create it in usual notepad, in Google you can find a lot of information how to create autoexec.bat
dont lose it in the first place
which feature of windows xp professional allows you to recover from installing the incorrect driver for a device
XP and 7 supports file sharing through network or any Windows supported storage device.
You use My Computer & Windows Explorer to browse the file system on a drive in Windows XP.
Paging File
In windows XP, assuming the question deals with how to recover the administrator password if lost, make a new standard profile and go to here: Start>Run>cmd.exe type in 'Net User (Your Username Here) (Your Password Here) Add Groups Administrators' and it should work.
Usually when you delete something your computer doesn't actually delete it. Look in your recycle bin or trash can. Otherwise, you can download a file recovery application. Search Google for "file recovery for windows".
Generally speaking, no. Most Windows XP installations are made onto NTFS partitions, which MS-DOS cannot read.
What is structure of window in windows XP