first, open C:\PROGRA~1\WinRescueXP\Cmd.pif
and paste me the contents of it
and open cmd and type
set path=c:\windows\system32;c:\windows\;c:\windows\sy stem32\wbem
close cmd, reopen, and see if it stays permanently fixed
if not, try
setlocal path=c:\windows\system32;c:\windows\;c:\windows\sy stem32\wbem