dhcp with two NIC cards

[powah]

My computer has two NIC cards.
How to assign different IP subnet addresses to them (eth0 and eth1) dynamically by dhcp?
e.g.
eth0 get 192.168.0.2
eth1 get 192.168.3.2


My dhcpd.conf is:
ddns-update-style interim;

subnet 192.168.0.0 netmask 255.255.255.0 {
option routers 192.168.0.1;
range 192.168.0.2 192.168.0.254;
}

subnet 192.168.3.0 netmask 255.255.255.0 {
option routers 192.168.3.1;
range 192.168.3.2 192.168.3.254;
}

ifcfg-eth0 and ifcfg-eth1 are similar.
/etc/sysconfig/network-scripts/ifcfg-eth1 is:
DEVICE=eth1
BOOTPROTO=dhcp
HWADDR=00:30:48:83:E9:11
ONBOOT=yes
TYPE=Ethernet
DHCP_HOSTNAME=rose
USERCTL=no
IPV6INIT=no
PEERDNS=no