I want to install bat file over lan

First its not a good idea to piggyback your question on someone else's. This can lead to confusion. You should start a new thread. So I've moved your question to its own thread.

Second, you need to be more detailed in your question. Its not clear what you are trying to do.

Batch files are not "installed", they are just run. If you are talking about using it as a logon script for a domain logon, there is a unique share for this purpose. There is one located on each domain controller called NETLOGON. This is where they would be copied to.