Hello...
i am running windows xp home sp1, DOS [Version 5.1.2600] on my compaq machine. i am not able to run any command exept DIR neither from cmd.exe nor from command.com. i am able to ping from RUN. but whnever i try to ping from DOS prompt i get this message:

Code:
C:\>ping 172.16.0.1
'ping' is not recognized as an internal or external command,
operable program or batch file.
All my ping and netstat batch files got corrupted too.

I scanned for viruses and worms but did'nt find any such thing. i tried to run in safe mode too but again same message .i am pissed off by this all. pliz help me..i am very confused..
Thanx...