Monitor mode (rfmon) on a Intel 2100 miniPCI wirelesscard with ipw2100driver

Hello,

I don't know if this is the right newsgroup, if not please redirect me :-)

I have a Dell inpiron 500m laptop whit an Intel Pro Wireless/2100
miniPCI card in it, running fedora core 4.
I have installed the ipw2100 driver and firmware. And it works.
I have alsp installed wireless tools v.27.

My problem is that I want to run kismet or airsnort in order to monitor
some networks, but I can't seem to set my card in to monitor mode (which
I believe is the same as rfmon)

When ever I run a command like:

# iwconfig eth1 mode monitor

then iwconfig returns:

eth1 unassociated ESSIDff/any Nickname:"ipw2100"
Mode:Managed Channel=0 Access Point: 00:00:00:00:00:00
Bit Rate=0 kb/s Tx-Powerff
Retryn 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:0 Missed beacon:0

As you can see from the second line the mode is still Managed. I can
change it into other modes (e.g. ad-hoc)

I believe this is the reason that kismet gives me the error:

[root@boxmax wlan]# kismet
Server options: none
Client options: none
Starting server...
Waiting for server to start before starting UI...
Will drop privs to thomas (500) gid 500
No specific sources given to be enabled, all will be enabled.
Enabling channel hopping.
Enabling channel splitting.
Source 0 (ipw): Enabling monitor mode for ipw2100 source interface eth1
channel 6...
FATAL: Failed to set channel 6 95:Operation not supported

A'm I right? Has anybody anybody got something that might help me?

Thanks
/Thomas