XP & 2000 users that use static ip\’s in one office & dhcp in another office

We have clients that have laptops with a static IP in one office & use dhcp in the main office. These are some bat files that can be used to switch from static to dhcp & back so they can log on to either part of the domain with as little inconvenience as possible. All the client has to do is double click the appropriate .bat file for thier location. These have saved me a lot of time changing configs when the clients are in the main office.