Give a try to http://www.netswitcher.com/


>How can I set up my laptop to seamlessly work with my work network (static ip) and my home network (really just an DSL connection with a dynamic ip).
>
>I can make both work, by manually changing the ip settings, but this takes too much time.
>
>What doesn't work, is setting the DHCP (dynamic ip) as the default setting, and setting the static ip config as the alterate.