Commands not working in Command Prompt ?

Hello everyone, Am using Windows XP Professional Service Pack 2.. From few days i have a problem with my command prompt... None of the commands are working in my command prompt except some of the commands like cd, cd\, etc, etc., Commands like ping, ipconfig, attrib, edit, etc, etc., are not working... When... show more Hello everyone, Am using Windows XP Professional Service Pack 2..
From few days i have a problem with my command prompt...
None of the commands are working in my command prompt except some of the commands like cd, cd\, etc, etc.,
Commands like ping, ipconfig, attrib, edit, etc, etc., are not working...
When i googled it some of them gave solutions like edit the path in Environment variables..
But it doesn't work for me..
Can any one give me a solution for this problem...
Update: 'edit' is not recognized as an internal or external command,
operable program or batch file.

This is the error it's showing when i type any command in command prompt...
3 answers 3