"Internet Sharing" subnet conflict?

[arri]

hi

i'm trying to share internet from one machines airport to my lan.
simple enough, done that many times etc..

but this time there's a conflict, because the dhcp subnet ip-range on the 'external' wifi-network, is the same as the range osx' dhcp-server tries to use when using internet sharing.

so that doesn't work.

how do i change the ip-range osx uses for internetsharing? (in tiger)

thanks
arri