does anyone know how to install intel 2915 abg in ubuntu?

this is what i get

dhclient eth1
Internet Systems Consortium DHCP Client V3.0.5
Copyright 2004-2006 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/sw/dhcp/

Listening on LPF/eth1/00:16:6f:29:79:d3
Sending on LPF/eth1/00:16:6f:29:79:d3
Sending on Socket/fallback
DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 4
DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 4
DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 11
DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 8
DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 4
No DHCPOFFERS received.
No working leases in persistent database - sleeping.

what does it mean

eth1 unassociated ESSID:""
Mode:Managed Channel=0 Access Point: Not-Associated
Bit Rate:0 kb/s Tx-Power=20 dBm Sensitivity=8/0
Retry limit:7 RTS thrff Fragment thrff
Encryption keyff
Power Managementff
Link Quality:0 Signal level:0 Noise level:0
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:1 Missed beacon:0

I saw the same error messages. These steps did it for me: http://www.debianadmin.com/enable-wp...ux.html‏