NOOOO, telling it to ignore things will only make it go away for those things. If you want it to stop running, go to Control Panel, Admin Tools, Services, and then click on the Security Center service, properties, disable and stop. That stops the actual process which is checking these things. While you're at it, if you don't want the firewall, you can disable it from there as well.

About your AP, disable windows wireless zero config (again, under services) and set your card up manually. A little more troublesome, but it will make for a much more stable wireless connection.