Connecting to wireless network while running Windows

I've just installed Windows XP through Bootcamp and I'm having trouble connecting to a wireless network. In My Network I don't have a Wireless Network icon as other sources say I should.

But I do remember on my old PC that icon did appear after I installed a wireless network card, but my notebook already has one integrated. Any suggestions?

Note: I own a MacBook Pro Aluminum (october)

Any help would be appreciated thanks.

Never mind, all I had t do was install Leapord cd.
Thanks anwyay.

Could you please elaborate on this process?

Thank you,
Koya