ive been experimenting with a PPTP setup with m0n0wall, but im finding
that alot of people use the .0.1 ip address ranges, so i would like to
change mine to be .2.1 or something similar so i can actually connect
and test out the VPN, i can connect, but no data gets passed.  (yes i
read this http://doc.m0n0.ch/handbook/pptp-notes.html ) which is why i
want to change my network subnet.

my question/problem is, that i already have a bunch of rules setup for
various ip's/services and i also assign ip's based on MAC addresses. 
would i have to manually edit every rule and every static ip address
to the new .2.1 scema? or would m0n0wall pick up on the fact that i
have changed it and automaticly do it for me since the addresses would
no longer be valid?

i have a gut feeling that it wont be that simple but im hoping for the better.

TIA

Nick