Moving laptops between offices.

I need a piece of software for windows which will allow users to move their windows 98/NT laptops between my NT 4.0 network, other company networks, and business centre networks. This needs to be similar to dave for the mac to save the users from any network configeration. The other offices range from all mac to all NT and the business centres just offer printers.
I’ve tried NetSwitcher on my computer and it crashes displaying a crash text when I try to change location. So a similar product without he crash would be ideal. Any ideas. Thanks in advance. Peter