That's a bit odd - 192.168.x.x is not an internet IP address - it's part of your local LAN setup (it's a reserved address range).
As for client data later being updated onto a server DB, the process you shoudl be looking at is Replication, and it is a bit more complex than you think...
Start reading here:
http://msdn.microsoft.com/en-us/library/ms151198.aspx[
^] - but don't expect it to be a five minute job!