(How to install and use packettracer5.0 localization package: 1. Install packettracer5.0 first. 2. Download the localization package (the one I uploaded) to the local computer and decompress it.? 3. Find chinese PTL file, put chinese Copy PTL to the languages folder of the packettracer5.0 installation directory. 4. Start packettracer5.0, select options from the top menu, and then select preferences. 5. The options interface will pop up. At the bottom of the interface, see the selectlanguage text box and select chinese Click changelanguage after PTL. This will tell you that it will not take effect until the next time you start packettracer5.0. 6. OK, let's turn off packettracer5.0 and start it again. At this time, we can see that Chinese is familiar to Chinese people. So far, the localization package has been installed.)