[Solved] Xbox 360 and Internet Connection Sharing

Santa Claustrophobia

Due to my current living arrangements, I've been able to connect my 360 to LIVE by using the open ethernet port via the wireless NIC I have installed. Recently, I upgraded my PC which also included a new, fresh Win7 install. I followed the steps here, both options, and now I cannot connect to the internet with the 360. During the build, I went from a 2.4ghz wireless NIC to a dual band one. I wonder if because the new card defaults to 5ghz that might have something to do with it, but I can't imagine why that matters.

Some things I cannot do:

I cannot use the old NIC. The new MB has no PCI slots, only PCI-e.
I cannot use the wireless adapter for the 360 itself. I've tried before. Where I live has a proxy service or something that you have to log into at least once per month via the internet and there is no dedicated account.
I can take my 360 to another location just to see if there is a fault in its hardware, but can't imagine why it worked without an issue two weeks ago and now does not. (Yeah, yeah...tech fails...I still don't buy it.)

All PC drivers are installed and up to date as of about a week ago. Any ideas what could be going on?

Santa Claustrophobia

Well, I decided to try again and this time I unchecked. the box for allowing other network users to control the ICS and it went through.

So, there you go.