I installed 3.0 on an Acer TravelMate 4060.

iwi0 at pci4 dev 4 function 0: Intel PRO/Wireless LAN 2200BG Mini-PCI Adapter 
(rev. 0x05)
iwi0: interrupting at irq 10
iwi0: 802.11 address 00:13:ce:58:c8:4e
iwi0: 11b rates: 1Mbps 2Mbps 5.5Mbps 11Mbps
iwi0: 11g rates: 1Mbps 2Mbps 5.5Mbps 11Mbps 6Mbps 9Mbps 12Mbps 18Mbps 24Mbps 
36Mbps 48Mbps 54Mbps

# ifconfig iwi0
iwi0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500
 ssid ""
 powersave off
 address: 00:13:ce:58:c8:4e
 media: IEEE802.11 autoselect
 status: no network

I installed sysutils/iwi-firmare.

# iwictl -i iwi0 -d /usr/pkg/libdata/if_iwi/

# dhclient iwi0
Jan  7 15:15:11  dhclient: Internet Software Consortium DHCP Client V3.0.1rc11
Jan  7 15:15:11  dhclient: Copyright 1995-2002 Internet Software Consortium.
Jan  7 15:15:11  dhclient: All rights reserved.
Jan  7 15:15:11  dhclient: For info, please visit 
http://www.isc.org/products/DHCP
Jan  7 15:15:11  dhclient: 
Jan  7 15:15:11  dhclient: Listening on BPF/iwi0/00:13:ce:58:c8:4e
Jan  7 15:15:11  dhclient: Sending on   BPF/iwi0/00:13:ce:58:c8:4e
Jan  7 15:15:11  dhclient: Sending on   Socket/fallback
Jan  7 15:15:15  dhclient: DHCPDISCOVER on iwi0 to 255.255.255.255 port 67 
interval 4
Jan  7 15:15:15  dhclient: send_packet: Network is down
Jan  7 15:15:19  dhclient: DHCPDISCOVER on iwi0 to 255.255.255.255 port 67 
interval 9
Jan  7 15:15:19  dhclient: send_packet: Network is down
^C

# ifconfig iwi0
iwi0: flags=8803<UP,BROADCAST,SIMPLEX,MULTICAST> mtu 1500
 ssid ""
 powersave off
 address: 00:13:ce:58:c8:4e
 media: IEEE802.11 autoselect
 status: no network
 inet 0.0.0.0 netmask 0xff000000 broadcast 255.255.255.255

It works on another Acer laptop running 3.0 with a netgear pcmcia card 
supported by ath.

Any tip?

Thierry.