Wireless capture

Wireshark
1

Hello all,

I have Wireshark 1.2.10 installed on my laptop on Windows 7.
It’s working perfectly when I try capturing wired traffic with my computer connected to my router with a cable,
but I can’t capture wireless traffic.
My wireless network card does not even appear in the interface list.
What can be the problem?

My wireless network card is “Dell Wireless 1397 WLAN Mini-Card” and I have WinPcap 4.1.2 installed.

Thanks