dhcp mobile users

[wanyph]

Hi,

I have 4 offices
and 50 notebook users.
I have 1 DHCP-server (win2003 domain) in each office.
All notebook users should work in all offices.


We have a range in each office for these 50 users.

for example:
192.168.18.1-192.168.18.49
192.168.17.1-192.168.17.49
192.168.16.1-192.168.16.49
192.168.15.1-192.168.15.49

Each user has an IP reservation by its mac-adress.
So that other devices cannot get an IP-adress


It´s not very confortable to maintain this.
Because we have to add the reservation in each office.

Is there a simplier solution for the whole situation?

For example a simple text file where I just have to enter
the mac-adress or so


thanx,
mewi