Can I change the size of the pool with out too much trouble?

Configuration:
NW5sp6a and all subsequent fixes

10.10.10.1 - 10.10.10.49 are IPís that I assign statically (excluded from pool)

10.10.10.50 - 10.10.10.254 is the dynamic pool but we only use 120 of
these


Can I just delete the dynamic pool then recreate it with the new size
of
10.10.10.76 - 10.10.10.254?

note i also run DNS on this box as well what will happen to the
entries
for .50 - .75?

I have it set for the lease to expire every 24 hours so I was thinking

of doing this on a Friday night so that when everyone came in on
Monday
the new address pool would be used

I have a mix of win 95 (B & C) win 98 and SE win2k and winXP pro

Thanks

jim