DHCP in PT 4.0

I'm new to the whole networking thing but I'm reading a Todd Lammle CCNA book. I was wondering if someone could explain to me how to use DHCP in Packet Tracer 4.0? I've set up a few networks in PT, but can't figure out the commands to make DHCP work. Any help would be appreciated

Try something like this on a router:

ip dhcp excluded-address 192.168.2.1

ip dhcp pool TEST
network 192.168.2.0 255.255.255.0
default-router 192.168.2.1

I tried this config on the ccna_12.pkt topology file on the "Vargas" router and it works. And ofcourse don't forget to issue the "ipconfig /renew" command on the PCs

All the needed information for configuring DHCP on Packet Tracer is on
www.packettracernetwork.com/dhcpconfiguration.html