INT 21 - LANtastic v4.0+ - CANCEL SERVER SHUTDOWN                               
	AX = 5FC9h
	ES:DI -> ASCIZA NUL-terminated ASCII string.	The ASCIZ string "ABC" consists of the four bytes 41h, 42h, 43h, and 00h.  Unless otherwise specified, maximum lengths given in the interrupt list do not include the terminating NUL. server name in form "\\machine"
Return: CF clear if successful
	CF set on error
	    AX = error code
Note:	you must have the "S" privilege to use this call
SeeAlso: AX=5FC8h