start -> Run -> regedit
go to start>run. then type regedit and press enter. or if you dont like this then go to start>programs>Accessories>command prompt. a window will be opened then type regedit in it and press enter. this way you can openRegistry Editor.
c:\windows\system32\config\regback
To clear the Command Prompt window, enter CLS
msconfig
c:\windows\system32\config\regback
exit
Defrag
DOS box
you have to use the command prompt(also called the DOS prompt by older users. You can find this by going to "start" , "programs" , "accessories" and "command prompt"
press the 'x' in the corner. Type in the word exit.
Typing in "cls" without the quotes and hitting enter will clear the command prompt window (DOS window) and show you just the current prompt such as "C:". If you search for "dos commands" you should find some lists of things that are available when you are in the command prompt. But be aware that not all are active on all computers and some commands can delete files and do other things that you may not really want. -)
command prompt