你去開啟C:WINDOWSsystem32driversetchosts...的檔案來編輯
在3台電腦內..同時新增下面3行...試看看(把IP位置寫入Hosts檔).......在全部從開機看看@@"....

---------------------------------檔案內容如下---------------------------------------------------

# Copyright (c) 1993-1999 Microsoft Corp.
#
# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
#
# This file contains the mappings of IP addresses to host names. Each
# entry should be kept on an individual line. The IP address should
# be placed in the first column followed by the corresponding host name.
# The IP address and the host name should be separated by at least one
# space.
#
# Additionally, comments (such as these) may be inserted on individual
# lines or following the machine name denoted by a '#' symbol.
#
# For example:
#
#     102.54.94.97   rhino.acme.com       # source server
#     38.25.63.10   x.acme.com         # x client host

127.0.0.1     localhost
192.168.1.10     PC001<<---------------------------新增這一行
192.168.1.20     PC002<<---------------------------新增這一行
192.168.1.30     PC003<<---------------------------新增這一行


希望有幫上忙~~~~