The ifshlp.sys file is an external file not associated with the command.com.
The following line must be put into the config.sys file.
When booting up the computer, you get the following error.
ERROR 3649: To load NetBEUI, the NDISHLP.SYS driver must be listed in the [Network Drivers] section of the SYSTEM.INI file.
Ensure first that you are loading the IFSHLP in your config.sys file. If the file is being loaded in the config.sys, make sure the system.ini has NDISHLP.SYS listed in the Transport= line in the [Network Drives] section.