I downloaded the wireless network Identification tool. Here's an update.

It says cannot detect wireless network. LAN harware not connected. I don't get it...

I don't use LAN. I use SBC DSL-modem.

But back to my question, how can you tell if you have the 2200BG installed on your comp? But if what I'v just did means I don't have the 2200BG, then I'm completely clueless on what's causing the BSOD.

And also, whats a network adapter? I have one-Realtek Family PCI Fast Ethernet NIC