The best way is to do a System Restore to abefore you deleted it. Otherwise, it should start with
C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;
There is usually a lot more after that, depending on what you've installed on your computer. FOr instance, mine is:
PATH=C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\ObjREXX;C:\rexxprogs;D:\X2;D:\X2\Macros;D:\Tools;D:\UnixTools;C:\Program Files (x86)\ObjREXX\OODIALOG;C:\Program Files (x86)\Common Files\Acronis\SnapAPI\;C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common;C:\Program Files (x86)\Common Files\Roxio Shared\DLLShared\