MADWifi problem

[Web Master]

Dear List Members,

I have a little problem with my wireless network card

I have a DLink DWA 542 card

-- SPECIFICATIONs -----------------------------------
STANDARDS - IEEE 802.11n (draft), IEEE 802.11g, IEEE 802.11b 
INTERFACE/BUS- 32-bit PCI 
FREQUENCY - 2.4GHz to 2.4835GHz 
SECURITY - Wi-Fi Protected Access (WPA, WPA2) 
INDICATORS - LEDs for Link, Activity 
REQUIREMENTS - Computer with: Windows XP SP2 or Windows 2000 
SP4
CD-ROM Drive 
20MB Hard Disk Space 
32-bit PCI Slot 
APPROVALS - FCC, CE 
DIMENSIONS - 3.8"w x 0.3"h x 4.7"d WT.- 0.23 lbs.

Others adviced me that I should follow the MADWifi Howto's installation 
steps. I should install a madwifi driver. 

http://madwifi.org/wiki/UserDocs/FirstTimeHowTo#InstallingMadWifi

But during the first steps I have a problem:

Removing old modules 
For this step you must be logged on as root. 
First, set all your MadWifi devices down: 
ifconfig ath0 down
ifconfig wifi0 down

When I issued an <ifconfig ath0 down> command I've got the answer, 
that <No such device> .
Afterwards I followed the all steps of howto, but at the end of 
installation the <ifconfig ath0 up> command shows the same answer:
<No such device>

What should I do? Will I install again my linux OS, after I plugged my 
network interface card?

I look forward to hearing from you.

Best Regards,

WM



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