Dynamic Update ISC DHCP Stale Records

[briandesu]

Ladies & Gents,

I have set up a BIND 9.2.1 server and ISC DHCP 3.0 server to perform
dynamic updates for Active Directory.  However, I am having a problem
with stale records.

Is it possible to configure the ISC DHCP server to remove the stale
records in the same fashion that a M$ dhcp server removes stale A and
PTR records from a Winbloze dns server?  If yes, what are the required
parameters in the dhcpd.conf file?

TIA,

briandesu