How to add MS-DOS commands ?

You can access DOS from the start menu. Just go to start and click on programs, accessories, Command prompt and there is the DOS prompt. Another way you can access the DOS prompt is to start your computer in safe mode. So what you need to do is... Restart your comp, Before the windows screen hit F8. If this doesn't work restart again and hold down the shift key. Now if this still doesn't you may need a start disk. Ok now you want to add commands? Ok here we go... after you access DOS type C: to change to C drive. Then type dir\p. This will bring up the directory. Now if you know what your doing you can type EDIT and then change or add commands.. Good Luck