Windows 7: ICS sharing from XP to Windows 7

So my wireless network adaptor won't work with 7 64bit since it's not signed properly it seems. I figured I'd try to share Internet from another machine on the network, but, per usual, it's not working well.

My XP machine has the wireless USB (Internet) and a wired connection through a router to my 7 machine. I can see each machine from the other, copy files back and forth, yeah... life is good. Except there's no Internet.

The XP has it, the 7 doesn't. They can share files so I don't know why the Internet isn't working. I shared the Internet on the wireless per every instruction I can find (and I used to have it working when both machines were Windows XP. I even tried the network connection wizard on XP, but nothing.



Now what?