To be honest, you really don't even need a tool for this. All you have to do is locate the registry hives and copy them somewhere, or even make copies in the same folder, but with other extensions.
Or you can use Regedit that comes with Windows. While it is good for exporting portions of the registry, it is not good for exporting the entire registry. Some keys or branches will be locked while you try to export them, and they will be omitted from the exported file.
ASR is the tool name
Regedit.exe Windows XP has only a Single registry editor (Regedit.exe) Windows 2000 ahs two registry editor Regedit32.exe Regedit.exe
A "regtool" is used to view and edit the Microsoft Windows registry. General information on that Windows registry can be found for example at Wikipedia (article "Windows Registry"). There one can also find mre information on registry tools (chapter 3.1 "Registry editors").
The name is Windows Registry
regedit
classes.dat
Classes.dat
The programs that are used to perform a registry scan in Windows 7 are ones that are all installed as part of the windows 7 installation. They are usually executable files and they work by checking that the registry has files it ought to have and that it does not have virus or malware files.
System.dat was first used in Windows 95 and contains part of the Windows registry. The system registry is where all the Windows settings and most of the application and driver settings are stored. It is a very important file and should be left alone, though you could run a registry cleaner and a registry packer and reduce the size of it. Since XP and higher versions of Windows handle the registry more efficiently, it is best in the newer Windows versions to avoid most registry tools (though there is no harm in running a registry packer which does an internal defragmentation of the registry).
There are a vast array of highly effective registry scanners which can be used with Windows 7. Examples of good, free scanners include JetClean and Wise Registry Cleaner.
By "fiel" you must surely mean "file"...You can edit the registry by using the "regedit" program built into windows
The registry can be edited manually in Microsoft Windows by running regedit.exe or regedt32.exe in the Windows directory. However, careless registry editing can cause irreversible damage. Thus, performing backups of the registry before editing it is highly recommended by Microsoft. The easiest way to change the registry is by pressing the start button and select run. Then type in regedit or regedit.exe and you will find the registry editor in windows.