Okay man... this is what happened after i installed both and tried the command "dhclient wlan0"....
linux:~ # dhclient wlan0
Internet Systems Consortium DHCP Client V3.0.1
Copyright 2004 Internet Systems Consortium.
All rights reserved.
For info, please visit
http://www.isc.org/products/DHCP
sit0: unknown hardware address type 776
sit0: unknown hardware address type 776
Listening on LPF/wlan0/00:0d:3a:2a:bd:00
Sending on LPF/wlan0/00:0d:3a:2a:bd:00
Can't bind to dhcp address: Address already in use
Please make sure there is no other dhcp server
running and that there's no entry for dhcp or
bootp in /etc/inetd.conf. Also make sure you
are not running HP JetAdmin software, which
includes a bootp server.
If you did not get this software from ftp.isc.org, please
get the latest from ftp.isc.org and install that before
requesting help.
If you did get this software from ftp.isc.org and have not
yet read the README, please read it before requesting help.
If you intend to request help from the
dhcp-server@isc.org
mailing list, please read the section on the README about
submitting bug reports and requests for help.
Please do not under any circumstances send requests for
help directly to the authors of this software - please
send them to the appropriate mailing list as described in
the README file.
exiting.