Multiple LAN Connections - Different Locations - One Network Card

Is it possible to create multiple LAN connections on Windows Vista (Business
Edition)?

We have a laptop (IBM ThinkPad – X61s lenovo) with one Ethernet 802.3
Adapter (Intel® 82566MM Gigabit Network Connection). We want to be able to
connect this laptop to two different (Ethernet) LANs in two different
buildings (not at the same time, of course ;-)

I am able to establish LAN connections in both places, but the problem is
each time I have to overwrite the IP settings from the previous location
(LAN).

So, the question is -- similar to being able to create and choose from
multiple "wireless" networks on Windows Vista, is there a such feature for
multiple LAN connections/profiles too? The idea is to save a LAN setting in
the system and use it later by simply choosing that connection by name,
without having to re-enter IP settings again.

Any advice?