Setting DHCP Reservations on a PIX

[Fint]

Does anyone know of a Cisco PIX, when acting as a DHCP server, can set reservations for certain MACs? Right now I'm just excluding the reserved IPs from the DHCP scope, but then I have to set those clients static and remember them later.

PIX 501E, running 6.3(4).

 

[Boscoh]

The PIX cant do reservations. It only has a very basic DHCP server.