MN-510's connection -- want it to show up in my connections

I have an MN-510 to connect to my home network/internet. I
also have an ethernet card, with an RJ45 running to the
xbox so I can play xbox live downstairs. Something
happened to my PC recently, but before I had both the
wireless connection and PCI NIC connection in my
connections, so I could share/bridge them. However, now
only the NIC's connection shows up, while the wireless
doesn't (there's an icon for MS broadband utility instead).

Question: How can I share the wireless connection? The
stupid wizard won't let me create a new connection, and
the 'create a network wizard' will not open either.

Thank you.